Relevant bibliographies by topics / Suture age

Academic literature on the topic 'Suture age'

Author: Grafiati
Published: 4 June 2021
Last updated: 29 January 2023

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Journal articles on the topic "Suture age"

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Boyajian, Michael K., Hanny Al-Samkari, Dennis C. Nguyen, Sybill Naidoo, and Albert S. Woo. "Partial Suture Fusion in Nonsyndromic Single-Suture Craniosynostosis." Cleft Palate-Craniofacial Journal 57, no. 4 (February 4, 2020): 499–505. http://dx.doi.org/10.1177/1055665620902299.

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Introduction: Partial synostosis of cranial sutures has been shown to have clinical and diagnostic significance. However, there is limited published information about how suture fusion progresses over time. In this study, we evaluate patients with nonsyndromic single-suture synostosis. We aim to define the incidence of partial versus complete suture fusion and whether a correlation exists between the degree of suture fusion and age. Methods: Two hundred fifty-four patients with nonsyndromic single-suture synostosis were evaluated. Preoperative computed tomography (CT) scans were rendered in 3-dimensions, all sutures were visualized and assessed for patency or fusion, and length of fusion was measured. Findings were grouped according to suture type (sagittal, coronal, metopic, or lambdoid), the degree of fusion (full, >50%, or <50%), and patient age at time of CT scan (0-90, 91-180, 181-360, or >360 days). Data were analyzed to correlate patient age versus the degree of suture fusion. Results: For all patients, 72% had complete and 28% had partial synostosis. Ratios of full to partial fusion for each suture type were as follows: sagittal 97:36, coronal 35:22, metopic 46:4, and lambdoid 4:10. The sagittal, coronal, and metopic groups demonstrated greater probabilities of complete suture fusion as patient age increases ( P = .021, P < .001, P = .001, respectively). This trend was also noted when all sutures were considered together by age-group ( P < .001). Conclusion: We note a partial suture fusion rate of 28.3%. Our analysis shows a correlation between the extent of suture synostosis and patient age. Finally, we demonstrate that different sutures display different patterns of partial and complete fusion.
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V., Shashikala, Abhilash S. B., Abhishek G., and Prajwal S. Fernandes. "A comparative study between continuous and x-interrupted sutures in emergency midline laparotomies." International Surgery Journal 5, no. 5 (April 21, 2018): 1753. http://dx.doi.org/10.18203/2349-2902.isj20181437.

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Background: Midline laparotomy is the most common technique of abdominal incisions in both emergency and elective settings. Wound dehiscence is related to several factors pertaining to patient besides suture material and method of closure. This study tries to compare continuous sutures with x-interrupted sutures in mass closure of midline laparotomy wound in patients undergoing emergency midline laparotomy for acute peritonitis.Methods: A total of 60 patients undergoing emergency midline laparotomy for secondary peritonitis were considered for the study, 30 of whom underwent closure of abdominal wall with continuous sutures (Group A) and the other 30 with x-interrupted sutures (Group B) using non-absorbable, monofilament, polypropylene suture. Necessary preoperative data, the time required for rectus closure, length of the suture material required, post-operative complications like surgical site infection, wound dehiscence were analyzed.Results: The groups were comparable in means of age and sex distribution. Group A was found to have lesser time for closure of rectus, lesser suture length and lesser suture to wound length ratio when compared with Group B. Surgical site infections were similar in both groups. Patients with rectus sheath sutured in x-interrupted sutures (n=2) had significantly less wound dehiscence as compared with continuous sutures (n=8) (p<0.05).Conclusions: Interrupted -X suture method of suturing reduces post-operative wound dehiscence, although requires more suture and consumes more time than the continuous method of suturing.
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Mahakkanukrauh, Pasuk. "Age Estimation from Computed Tomography of Cranial Suture Closure in a Thai Population." Medicine & Health 15, no. 2 (December 31, 2020): 276–89. http://dx.doi.org/10.17576/mh.2020.1502.24.

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Age estimation from human skeletal remains is an important step to reconstruct a biological profile. Cranial suture has long been studied for its age-related closure. However, until now, forensic anthropologists still attempt to investigate the best way of estimating age at death from cranial suture closure because skull is usually found at the crime scene due to its easy recognised-appearance and persistence to post-mortem insults. For these reasons, a study of age estimation from cranial suture closure in a Thai population was conducted, which focussed to study the appearance and visibility of facial suture closure using computed tomography (CT). CT image series of 140 cases were obtained in order to investigate ectocranial closure of the selected facial sutures. The results from CT image analysis revealed that nasomaxillary provided the most consistent examination of suture closure (52%) while frontonasal delivered the lowest consistency in suture closure examination (29%). The inconsistency mostly occurred in assigning the closure score of 1 and 2. Thus, it could be suggested that a 3-scale scoring system of closure: open, closing, and closed, could be an appropriate method of evaluating degree of ectocranial closure of facial sutures obtained from CT imaging. This fundamental information of facial suture closure from CT images could serve as a starting point on development of age estimation technique from suture closure by utilising CT images.
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Keshav Tumram, Nilesh, Soniya B.Parchake, Arun P. Kasote, and Meena M. Meshram. "Macroscopic Cranial Suture Closure in An Adult Population: Is It Reliable for Estimating Age?" 99 3, no. 1 (June 1, 2021): 17–30. http://dx.doi.org/10.26735/ijjm2816.

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Background:- Age estimation is one of the important parameters for estimation of biological profile of an individual. Generally speaking, estimation of age of an individual whether living or dead is very important in Medicolegal and forensic scenario. The objective of the present study was to observe the chronology and pattern of union of cranial sutures namely coronal and lambdoid and to find out the relationship between closure of cranial suture and age of the deceased. An attempt was also made to see the applicability of Acsadi and Nemeskeri method in an Indian population. A total of 193 adult calvaria (133 males and 60 females) were studied from the autopsy cases. The extent of obliteration was studied ectocranially and endocranially in the two main sutures of the calvarium i.e. coronal and lambdoid. Results:- The results indicate that a strong positive correlation of ectocranial with endocranial suture closure is found in the age group of 30-39 years for right coronal, left coronal, while age group of 60-69 years shows a strong positive correlation for lambdoid sutures. This has also been confirmed in the study that the cranial suture obliteration starts endocranially and proceeds towards ectocranial surface. Statistically insignificant sex differences exist in suture closure. Conclusion:- The coronal and lambdoid sutures were closed in the age group of above 70 years with mean values of 3.54 for coronal and 3.7 for lambdoid suture. Acsadi and Nemeskeri’s method was found to be applicable to the Indian population for determination of age from cranial sutures.
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Hudgins, Roger J., Steven R. Cohen, Fernando D. Burstein, and William R. Boydston. "Multiple Suture Synostosis and Increased Intracranial Pressure following Repair of Single Suture, Nonsyndromal Craniosynostosis." Cleft Palate-Craniofacial Journal 35, no. 2 (March 1998): 167–72. http://dx.doi.org/10.1597/1545-1569_1998_035_0167_mssaii_2.3.co_2.

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Objective Increased intracranial pressure, frequently associated with closure of multiple cranial sutures, has been reported to occur in 36% of cases following correction of syndromal craniosynostosis. Although much less common, multiple suture closure may occur following repair of single suture, non-syndromal craniosynostosis and we present cases that concern two such children. Results Two children with nonsyndromal craniosynostosis, one metopic and one left-coronal, underwent fronto-orbital advancement at age 3 months. At age 19 months and at age 5 years, respectively, both patients re-presented with headaches, decrease in head circumference percentile, and acceptable cosmetic outcome. Both had computerized tomographic evidence of multiple closed cranial sutures and increased intracranial pressure (ICP) (determined by monitoring). Both patients improved following a cranial expansion procedure. Conclusion Delayed closure of multiple sutures and resultant increased ICP may occur following correction of nonsyndromal, single suture craniosynos-tosis. This may be more likely when the initial suture is contiguous with the facial sutures. Children should be followed for many years following cranio-synostosis repair with cranial, neurologic, and possibly funduscopic examinations as well as head circumference measurements to detect delayed closure of cranial sutures.
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Bausili Portabella, Maria Montserrat, Jeroni Nadal, Juan Alvarez de Toledo, María Fideliz de la Paz, and Rafael Ignacio Barraquer. "Long-term outcome of scleral-sutured posterior chamber intraocular lens: a case series." British Journal of Ophthalmology 104, no. 5 (August 21, 2019): 712–17. http://dx.doi.org/10.1136/bjophthalmol-2019-314054.

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PurposePurpose: To evaluate the long-term stability of scleral-sutured intraocular lenses (IOLs) and analyse the possible causes of suture breakage.SettingBarraquer Institute in Barcelona, Spain.DesignRetrospective study of consecutive cases.MethodsStudy of patients with scleral-sutured IOL with aphakia, subluxated or luxated IOL were included. Follow-up was longer than 6 months and patients over 18 years of age. Preoperative data (best-corrected visual acuity testing (BCVA), intraocular pressure (IOP), axial length and slit-lamp examination), intraoperative data (characteristics of the scleral flaps, suture material (Prolene or Mersilene) and scleral-sutured IOL) and postoperative data (BCVA, IOP, slit-lamp examination and complications) through 10 years were collected for analysis.Results345 consecutive cases of scleral-sutured IOL were included. 25 eyes underwent a second operation after a prior sutured IOL due to suture breakage (mean 40.2±39.6 months after the first surgery) and three of them needed a third surgery. Younger adults (less than 40-year old), the use of a combination of Prolene and Mersilene sutures to perform the surgery and suturing only one flap were found to have higher risk of suture breakage after a follow-up of 10 years. The probability of surviving of the scleral-sutured IOL at 10 years after surgery was 0.79.ConclusionsScleral-sutured posterior chamber IOL in eyes with a lack of capsular support is a safe and effective procedure with a low rate of complication and stable visual acuity. Further studies with special focus on young adults or myopic eyes are required to demonstrate long-term safety in those special cases.
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Wilkinson, C. Corbett, Cesar A. Serrano, Brooke M. French, Sarah J. Graber, Emily Schmidt-Beuchat, Lígia Batista-Silverman, Noah P. Hubbell, and Nicholas V. Stence. "Fusion patterns of minor lateral calvarial sutures on volume-rendered CT reconstructions." Journal of Neurosurgery: Pediatrics 26, no. 2 (August 2020): 200–210. http://dx.doi.org/10.3171/2020.2.peds1952.

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OBJECTIVESeveral years ago, the authors treated an infant with sagittal and bilateral parietomastoid suture fusion. This made them curious about the normal course of fusion of “minor” lateral sutures (sphenoparietal, squamosal, parietomastoid). Accordingly, they investigated fusion of these sutures on 3D volume-rendered head CT reconstructions in a series of pediatric trauma patients.METHODSThe authors reviewed all volume-rendered head CT reconstructions obtained from 2010 through mid-2012 at Children’s Hospital Colorado in trauma patients aged 0–21 years. Each sphenoparietal, squamosal, and parietomastoid suture was graded as open, partially fused, or fused. In several individuals, one or more lateral sutures were fused atypically. In these patients, the cephalic index (CI) and cranial vault asymmetry index (CVAI) were calculated. In a separately reported study utilizing the same reconstructions, 21 subjects had fusion of the sagittal suture. Minor lateral sutures were assessed, including these 21 individuals, excluding them, and considering them as a separate subgroup.RESULTSAfter exclusions, 331 scans were reviewed. Typically, the earliest length of the minor lateral sutures to begin fusion was the anterior squamosal suture, often by 2 years of age. The next suture to begin fusion—and first to complete it—was the sphenoparietal. The last suture to begin and complete fusion was the parietomastoid. Six subjects (1.8%) had posterior (without anterior) fusion of one or more squamosal sutures. Six subjects (1.8%) had fusion or near-complete fusion of one squamosal and/or parietomastoid suture when the corresponding opposite suture was open or nearly open. The mean CI and CVAI values in these subjects and in age- and sex-matched controls were normal and not significantly different. No individuals had a fused parietomastoid suture with open squamosal and/or sphenoparietal sutures.CONCLUSIONSFusion and partial fusion of the sphenoparietal, squamosal, and parietomastoid sutures is common in children and adolescents. It usually does not represent craniosynostosis and does not require cranial surgery. The anterior squamosal suture is often the earliest length of these sutures to fuse. Fusion then spreads anteriorly to the sphenoparietal suture and posteriorly to the parietomastoid. The sphenoparietal suture is generally the earliest minor lateral suture to complete fusion, and the parietomastoid is the last. Atypical patterns of fusion include posterior (without anterior) squamosal suture fusion and asymmetrical squamosal and/or parietomastoid suture fusion. However, these atypical fusion patterns may not lead to atypical head shapes or a need for surgery.
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Wilkinson, C. Corbett, Nicholas V. Stence, Cesar A. Serrano, Sarah J. Graber, Lígia Batista-Silverman, Emily Schmidt-Beuchat, and Brooke M. French. "Fusion patterns of major calvarial sutures on volume-rendered CT reconstructions." Journal of Neurosurgery: Pediatrics 25, no. 5 (May 2020): 519–28. http://dx.doi.org/10.3171/2019.11.peds1953.

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OBJECTIVERecently, the authors investigated the normal course of fusion of minor lateral calvarial sutures on “3D” volume-rendered head CT reconstructions in pediatric trauma patients. While evaluating these reconstructions, they found many more fused sagittal sutures than expected given the currently accepted prevalence of sagittal craniosynostosis. In the present study, using the same set of head CT reconstructions, they investigated the course of fusion of the sagittal as well as the lambdoid, coronal, and metopic sutures.METHODSThey reviewed all volume-rendered head CT reconstructions performed in the period from 2010 through mid-2012 at Children’s Hospital Colorado for trauma patients aged 0–21 years. Each sagittal, lambdoid, coronal, or metopic suture was graded as open, partially fused, or fused. The cephalic index (CI) was calculated for subjects with fused and partially fused sagittal sutures.RESULTSAfter exclusions, 331 scans were reviewed. Twenty-one subjects (6%) had fusion or partial fusion of the sagittal suture. Four of the 21 also had fusion of the medial lambdoid and/or coronal sutures. In the 17 subjects (5%) with sagittal suture fusion and no medial fusion of adjacent sutures, the mean CI was 77.6. None of the 21 subjects had been previously diagnosed with craniosynostosis. Other than in the 21 subjects already mentioned, no other sagittal or lambdoid sutures were fused at all. Nor were other coronal sutures fused medially. Coronal sutures were commonly fused inferiorly early during the 2nd decade of life, and fusion progressed superiorly and medially as subjects became older; none were completely fused by 18 years of age. Fusion of the metopic suture was first seen at 3 months of life; fusion was often not complete until after 2 years.CONCLUSIONSThe sagittal and lambdoid sutures do not usually begin to fuse before 18 years of age. However, more sagittal sutures are fused before age 18 than expected given the currently accepted prevalence of craniosynostosis. This finding is of unknown significance, but likely many of them do not need surgery. The coronal suture often begins to fuse inferiorly early in the 2nd decade of life but does not usually complete fusion before 18 years of age. The metopic suture often starts to fuse by 3 months of age, but it may not completely fuse until after 2 years of age.
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Burrows, Annie M., Mark P. Mooney, Timothy D. Smith, H. Wolfgang Losken, and Michael I. Siegel. "Growth of the Cranial Vault in Rabbits with Congenital Coronal Suture Synostosis." Cleft Palate-Craniofacial Journal 32, no. 3 (May 1995): 235–46. http://dx.doi.org/10.1597/1545-1569_1995_032_0235_gotcvi_2.3.co_2.

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Craniofacial growth data from craniosynostotic children have shown that suture immobilization results in predictable restrictions of cranial vault growth in a direction perpendicular to the affected suture and compensatory growth at sutures perpendicular to the affected one. This study tests these predictions by using rabbits with nonsyndromic congenital coronal suture synostosis. Data were collected from 96 rabbits divided into three groups: 42 unaffected litter mate controls, 33 partially synostosed rabbits, and 21 completely synostosed rabbits. Markers were placed bilaterally on either side of the vault sutures at 1.5 weeks of age. Serial radiographs were taken at 1.5, 6, 12, and 18 weeks of age for assessment of growth at the vault sutures and of various cranial landmarks. Results revealed that completely synostosed animals had significantly (p <.05) shorter cranial vaults, reduced growth at the coronal suture, and increased growth at the sagittal, frontal, and squamosal sutures compared with unaffected rabbits. Results also showed that the calvarial growth observed in this craniosynostotic rabbit model closely reflects predicted compensatory patterns seen in human clinical populations and that this rabbit model is valuable for understanding the pathogeneses and craniofacial growth patterns of humans with premature cranial suture synostosis.
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Mooney, Mark P., Annie M. Burrows, Timothy D. Smith, H. Wolfgang Losken, Lynne A. Opperman, Jason Dechant, Amy M. Kreithen, et al. "Correction of Coronal Suture Synostosis Using Suture and Dura Mater Allografts in Rabbits with Familial Craniosynostosis." Cleft Palate-Craniofacial Journal 38, no. 3 (May 2001): 206–25. http://dx.doi.org/10.1597/1545-1569_2001_038_0206_cocssu_2.0.co_2.

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Objective: Resynostosis following surgical correction of craniosynostosis is a common clinical correlate. Recent studies suggest that the dura mater is necessary to maintain suture patency. It has also been hypothesized that dura mater from synostotic individuals may provide aberrant biochemical signals to the osteogenic fronts of the calvaria, which result in premature suture fusion and subsequent resynostosis following surgery. This study was designed to test this hypothesis by surgically manipulating the coronal suture and dura mater in rabbits with familial craniosynostosis to prevent postsurgical resynostosis. Design: Craniofacial growth and histomorphometric data were collected from 129 rabbits: 72 normal controls and 57 rabbits with bilateral coronal suture synostosis (15 unoperated on controls; 13 surgical controls; 9 dura mater transplant only; 10 suture transplant only; and 10 suture and dura mater transplant). At 10 days of age, all rabbits had radiopaque amalgam markers placed on either side of the coronal, frontonasal, and anterior lambdoidal sutures. At 25 days of age, 42 synostosed rabbits had a 3 to 5-mm wide coronal suturectomy. Coronal sutures and/or underlying dura mater allografts were harvested from same-aged, wild-type, isohistogenic control rabbits and transplanted onto the dura mater of synostosed host rabbits. Serial radiographs were taken at 10, 25, 42, and 84 days of age, and the suturectomy sites were harvested at 84 days of age in 44 rabbits and serially sectioned for histomorphometric examination. Results: Results revealed that cranial vault growth was significantly (p < .05) improved following surgical release of the fused coronal suture compared with synostosed rabbits who were not operated on but was still significantly different (p < .05) from that of normal control rabbits. By 84 days of age, significant (p < .05) differences were noted in calvarial suture marker separation, cranial vault shape indices, and cranial base angles between rabbits with and without dura mater allografts, probably as a result of resynostosis of the suturectomy site or suture-only allografts. Qualitative histological examination revealed that at 84 days of age rabbits with suture and dura allografts had patent coronal sutures, suture-only allografts had fused coronal sutures with extensive endosteal hyperostosis, dura mater–only allografts had some new bone in the suturectomy site that resembled rudimentary osteogenic fronts, and suturectomy controls had extensive endosteal bone formation and resynostosis of the suturectomy site. Significantly (p < .05) more bone was found in the suturectomy sites of rabbits without dura mater allografts compared with rabbits with dura mater allografts. Conclusions: Results support the initial hypothesis that normal dura mater allografts will maintain suture or suturectomy site patency and allow unrestricted craniofacial growth. However, it is still unclear whether the dura mater from normal rabbits was providing biochemical signals to the transplanted sutures or suturectomy sites or simply acting as a barrier to prevent abnormal biochemical signals from the dura mater of synostosed rabbits from reaching the calvaria. The clinical and therapeutic implications of these procedures are discussed.
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Dissertations / Theses on the topic "Suture age"

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Åkesson, Emil. "Age of the Cremated : On the estimation of age of burnt human remains." Thesis, Stockholms universitet, Osteoarkeologiska forskningslaboratoriet, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-182048.

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The estimation of age is an important aspect in osteoarchaeological analysis. In order to understand people and their fates in past societies, researchers must turn to palaeodemography. Therefore, it is vital that the methods of age estimation, which the foundations of palaeodemographic reconstructions rest upon, are as accurate and reliable as possible. In current Swedish cremation-osteoarchaeology, two methods of age estimation are commonly used: suture closure and relative thickness of the diploë. However, no substantial evaluation of these two methods have been undertaken. This study aims to evaluate the two methods of age estimation of cremated remains, suture closure and relative thickness of the diploë. This was done by testing the two methods on two unburnt populations, Mediaeval city-dwellers from Helgeandsholmen, Stockholm, Sweden, and Middle-Neolithic hunter-gatherers from Ajvide, Gotland, Sweden. Suture closure and proportion of diploë was observed in comparison with age-related changes of the auricular surface of the ilium and the pubic symphysis. Based on the results of the study, possible courses of action were proposed and then applied on cremated remains from a Late Iron Age burial ground on Lovö, Stockholm, Sweden. The results showed significant moderate correlation with age for both methods (0.61 for suture closure and 0.58 for proportion of diploë). However, early stage of suture closure could identify a group consisting of juveniles and young adults, while advanced suture closure could identify a group consisting of middle adults and old adults. These results, which proved to be more reliable than existing methods, can, hopefully, lead to improvements of the assessment of age in cremated remains, and increase our understanding of the fates of people of the past.
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Kirk, Jason Dale. "Cranial suture closure: A quantitative method for age estimation using laser instrumentation." Thesis, Wichita State University, 2007. http://hdl.handle.net/10057/1520.

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Cranial suture closure has long been recognized as a character of human development related to aging. For this reason, it has been utilized for forensic and archaeological studies to determine the age at death of unidentified and skeletonized individuals. Despite remaining a popular age indicator today, studies dating back to the 19th Century have published contradictory results on the nature of this relationship. Many authors have concluded that cranial suture closure exhibits, at most, a sketchy relationship with age and should not be used as an age indicator, whereas others have supported its inclusion despite a wide range of variability. Traditional methods for assessing cranial suture closure all defined degrees of obliteration and assigned discrete scores. However, with the development of technology, new techniques may be capable of better assessing the association of cranial suture closure in age. The current study is an attempt to address cranial suture closure with a new quantitative method that utilizes laser technology. 196 black male crania from the Hamann-Todd Collection were observed. The suture landmarks established by Meindl and Lovejoy were recorded standard scores and were also scanned with the laser device, which quantifies the amount of reflected light off of a surface. The results showed that the laser device accurately and consistently quantifies light reflected through a suture joint, especially when calibrated to the surrounding bone. A general trend for the laser measurements to decrease with age was observed. It was concluded that a relationship between suture closure and age does exist, but other factors affecting suture closure should not be overlooked. Further application of the laser method, through the refinement of data collection techniques and the device used, may increase what is known on the structure and development of the skull, and may be able to more precisely elucidate the tenuous relationship between suture closure and age.
Thesis [M.A]: Wichita State University, College of College of Liberal Arts and Sciences, Dept. of Anthropology
"December 2007."
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Kirk, Jason Dale Moore-Jansen Peer H. "Cranial suture closure: A quantitative method for age estimation using laser instrumentation /." Thesis, A link to full text of this thesis in SOAR, 2007. http://hdl.handle.net/10057/1520.

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Nguyen, Ngoc Thông. "Evolution de la suture palatine médiane au cours de la vie." Paris 11, 2009. http://www.theses.fr/2009PA113001.

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La suture palatine médiane provient, embryologiquement d'une part du bourgeon médian qui va donner notamment le palais primaire (5ème semaine) et d'autre part des processus palatins latéraux, issus de la face profonde des bourgeons maxillaires qui vont réaliser le palais secondaire (6ème - 12ème semaine). Ainsi, les zones de fusion, de type synfibrose, des différents éléments vont donner la suture palatine médiane. L'enjeu de ce travail est de connaître l'évolution de la synfibrose de la suture palatine médiane. L'étude est composée de deux parties : radiologique, surtout, examens de scanners des sinus maxillaires chez l'enfant et l'adulte et histologique, étude de pièces anatomiques de palais chez le foetus, l'embryon, l'adulte et l'animal. Les résultats montrent qu'il n'existe pas d'âge de fermeture complète de la suture palatine médiane. Egalement, ils révèlent que les palais primaire et secondaire évoluent séparément : selon l'axe antéropostérieur, le secondaire se ferme d'avant en arrière et généralement après la fermeture du primaire et selon l'axe vertical, le palais primaire se ferme de bas en haut tandis que le palais secondaire de haut en bas. Il est difficile de transposer ces résultats en orthopédie dentofaciale puisque la disjonction de la suture palatine médiane est essentiellement orthodontique et rarement chirurgicale (après l'âge de 14-16 ans). Mais, deux explications peuvent être avancées : l'existence au niveau de la suture d'un tissu osseux "" jeune et lâche""permettant une disjonction orthodontique ou ""âgé et dense"" obligeant un acte chirurgical, plus ou moins associée à une absence de fermeture de la suture non visible radiologiquement. Néanmoins, un scanner peut être utile en cas de disjonction chirurgicale afin de guider le chirurgien sur la profondeur de l'ostéotomie
In embryology, the mid palatal suture comes from the median bud which will give, including, the primary palate (5th week) and the lateral palatine process, issued from the deep surface of the maxillary buds which will create the secondary palate (6th ?€? 12th week). Thus, the areas of mergers, type synfibrosis, different elements will give the mid palatal suture. The challenge of this study is to know the development of the synfibrosis of this suture. The work is composed of two parts : radiologic, especially, reviews of CT scanners of maxillary sinus in children and adults and histologic, study anatomical parts of palates in the fetus, embryo, adult and animal. The results show that there is no age for a complete closure of the mid palatal suture. Also, they show that the primary and secondary palates evolve separately : for anterior-posterior axis, the secondary closes from front to back and usually after the closure of the primary and for vertical axis, the primary palate closes from bottom to top, whereas the secondary palate, from top to bottom. It is difficult to translate these results in dentofacial orthopedic since the disjunction is mainly orthodontic and rarely surgical (after the age of 14-16). But, two explications can be explained : the existence at the suture, a bone tissue "young and low" which allows a orthodontic separation or "old and dense" requiring surgical procedure, more or less with a lack closure of the suture not visible radioactively. Nevertheless, a scanner can be useful in a surgical disjunction to guide the surgeon on the depth of the osteotomy
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Guynn, Jerome. "Age and Tectonic Evolution of the Amdo Basement: Implications for Development of the Tibetan Plateau and Gondwana Paleogeography." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/195951.

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The elucidation of the geologic processes that led to the creation of the Tibetan Plateau, a large area of thick crust and high elevation, is a fundamental question in geology. This study provides new data and insight on the geologic history of central Tibet in the Jurassic and Cretaceous, prior to the Indo-Asian collision, as well as the Gondwanan history of the Lhasa and Qiangtang terranes of the plateau. This investigation is centered on the Bangong suture zone near the town of Amdo and I present new geochronology, thermochronology, thermobarometry and structural data of the Amdo basement, an exposure of high-grade gneisses and intrusive granitoids. Using a range of thermochronometers, I show there were two periods of cooling, one in the Middle-Late Jurassic after high-grade metamorphism and a second in the Early Cretaceous. I attribute Middle-Late Jurassic metamorphism, magmatism, and initial cooling of the Amdo basement to arc related tectonism that resulted in tectonic or sedimentary burial of the magmatic arc. I propose that a second period of cooling, nonmarine, clastic sedimment deposition and thrust faulting in the Early Cretaceous is related to the Lhasa-Qiangtang collision. The thermochronology reveals limited denudation between the Cretaceous and the present, indicating the existence of thickened crust when India collided with Asia in the early Tertiary. U-Pb geochronology of the orthogneisses and detrital zircon geochronology of metasedimentary rocks suggests that the Lhasa and Qiangtang terrane were located farther west along Gondwanan's northern margin than most reconstructions depict.
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SUZUKI, Kazuhiro, Yutaka NAKAI, Daniel J. DUNKLEY, and Mamoru ADACHI. "Significance of c. 300 Ma CHIME zircon age for post-tectonic granite from the Hercynian suture zone, Bamian, Afghanistan." 名古屋大学博物館, 2002. http://hdl.handle.net/2237/3236.

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7

Eriksson, Matilda. "Tandslitage som åldersbedömningsmetod : Vad berättar tänderna om diet?" Thesis, Uppsala universitet, Institutionen för arkeologi och antik historia, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-388583.

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The intention with this thesis is to improve the method to assess dental wear as an age indicator by examining its correlation with the closure of cranial suture and the influence diet has on dental wear. This thesis explores this correlation through a comparative study between a collection of skulls with unknown context and a control group with known context. Age assessment of cranial sutures is one of the oldest and most questionable methods of physical anthropology. The studies that were carried out in the beginning of the 21st century have shown a useful correlation between the cranial sutures closure and age assessment. Research on food is essential for understanding a society, and dental health has always been important for wellbeing. A difference between populations today and historical populations is the dental wear that causes infections. All these premises make this research interesting to explore further, to learn more about what the teeth can tell us about historic populations.
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Beauthier, Jean-Pol. "Contribution à l'approche anthropologique et médico-légale des sutures viscérocrâniennes utiles dans l'estimation de l'âge au décès (Sutures palatines, fronto-naso-maxillaires et zygomatiques)." Doctoral thesis, Universite Libre de Bruxelles, 2009. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210228.

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Les sutures crâniennes ont été régulièrement étudiées au fil des siècles puisque déjà Vésale établissait une relation entre l’âge et la synostose suturale.

Leur imprécision a quelque peu confiné l’observation de ces sutures dans un certain oubli, justifié en partie.

Il est clair que leur fiabilité quant à l’estimation de l’âge au décès reste discutable et ce, pour diverses raisons.

Leur observation est difficile et dès lors sujette à subjectivité dans l’appréciation de leurs stades de fusion.

De plus, leur apparence sur le crâne sec peut être altérée par divers artéfacts de conservation (cire, vernis…).

Outre l’observation des classiques sutures ectocrâniennes de voûte et l’utilisation des méthodes habituelles en la matière (méthode de Acsádi et Nemeskéri, méthode de Masset), nous avons orienté notre étude vers des sutures peu voire pas exploitées, à savoir les sutures palatines, les sutures fronto-naso-maxillaires et les sutures de l’os zygomatique.

Ces trois groupes suturaux ont la particularité d’évoluer de manière très lente vers la fusion, à tel point que peu d’individus en présentent une oblitération complète.

Face au vieillissement de la population et de par notre expérience médico-légale et anthropologique d’étude de pièces osseuses de personnes âgées, nous avons estimé qu’il était utile de se pencher sur des collections particulières de sujets d’âge avancé, afin d’apprécier l’évolution morphologique de ces sutures faciales.

Si certaines personnes fort âgées gardent malgré tout des caractéristiques suturales peu évoluées, il existe dans l’ensemble, une progression suturale quasiment constante en fonction de l’âge.

Nous avons tenté de la cerner, en attribuant à ces sutures, des degrés bien définis de cette progressive fusion et par là, l’aboutissement à un coefficient moyen d’oblitération suturale, se traduisant aisément en pourcentage d’oblitération ou pouvant être introduit dans des équations de régression.

Tout en connaissant les limites de cette approche, nous pouvons estimer qu’elle peut rendre des services lors de l’étude de restes humains squelettisés, notamment s’ils appartiennent à des personnes fort âgées, dès lors qu’à ces stades de vieillissement, peu de méthodes restent encore applicables. D’autre part, l’approche en pourcentage d’oblitération suturale rend également des services lorsque les crânes étudiés sont fragmentés. C’est la situation que nous rencontrons actuellement lors de l’étude d’une très importante collection anthropologique à l’Institut royal des Sciences naturelles de Belgique.

Cette observation suturale pourra également – à l’avenir – trouver un terrain d’approche fort utile par l’étude des sutures en CT-Scan ou en micro-CT.

Enfin, grâce à ces techniques modernes d’imagerie médicale, les sutures trouvent un regain d’intérêt dans une application toute particulière, qui est celle de l’identification comparative, puisqu’il apparaît que le « dessin sutural » s’avère tout à fait propre à chaque individu.

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Cranial sutures were regularly studied during centuries since Vésale already established a relationship between age at death and sutural fusion.

Their inaccuracy somewhat confined the observation of these joints in a certain lapse of memory, partly justified.

Various reasons clearly indicate that their reliability for age at death estimation remains debatable.

Their observation is difficult and consequently prone to subjectivity in the appreciation of their stages of fusion.

Moreover, their appearance on dry cranium can be modified by various artefacts from preserving methods (wax, varnished…).

In addition to the traditional observation of ectocranial sutures (with the usual methods such as Acsádi and Nemeskéri method and Masset method), we have directed our study towards not much exploited sutures, namely the palatine sutures, the fronto-naso-zygomatic sutures and the sutures of the zygomatic bone.

These three sutural groups are characteristic by evolving very slowly to fusion, and than, only few individuals present a complete obliteration of the latter.

Because of general population ageing and our medicolegal and anthropological experience of skeletal remains in elderly, we estimated the usefulness in studying particular collections of old people, in order to appreciate the morphological evolution of these facial joints.

Despite some very old people who present little evolved sutural characteristics, we consider as a whole, an almost constant sutural progression according to age.

We tried to define degrees of this progressive fusion and by the way, the result with a sutural obliteration average coefficient, can be easily translate as a percentage obliteration or able to be introduced into regression equations.

The limits of this approach are well known but we estimate that it is possible to help the examination of human skeletal remains in elderly, although at these stages of ageing, some methods remain still applicable. In addition, the approach expressed as a percentage of sutural obliteration is also very helpful when craniums are fragmented. This situation is currently observed on the anthropological collections at the Royal Belgian Institute of Natural Sciences.

Furthemore in the future, the sutural observation will find an interesting and useful approach by the study of the joints in CT-Scan or micro-CT.

At least, thanks to these modern techniques of medical imagery, the sutures find a renewed interest in a very particular application, such as comparative identification. It appears that the "sutural drawing" proves completely specific to each individual.


Doctorat en sciences médicales
info:eu-repo/semantics/nonPublished

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Jooste, Nicolene. "Validating the accuracy and repeatability of transition analysis for age estimation in South Africa." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/45975.

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Transition analysis transforms skeletal traits with an invariant, unidirectional series of stages into a likelihood function with a maximum likelihood value and a 95% confidence interval. Boldsen et al. used transition analysis to develop an adult age estimation method employing components of the cranial sutures, pubic symphysis and ilial portion of the sacroiliac joint, used either in combination or individually. This validation study aimed to use the 36 transition analysis numerical, categorical scores for the anatomical features in conjunction with the ADBOU computer program to assess the accuracy and precision of the age estimates for 149 black individuals from the Pretoria Bone Collection. In addition, the effect of observer variability in scoring of these traits was assessed. Six age estimations were generated by the ADBOU computer program using 1) the cranial sutures only, 2) the pubic symphysis only, 3) the auricular surface of the ilium only, 4) all three features combined, 5) all three features combined and modified by a forensic prior distribution and 6) all three features combined and modified by an archaeological prior distribution. The six point estimate categories, calculated from the maximum likelihood values, were evaluated for accuracy using mean absolute values. The 95% confidence intervals were evaluated for range width and accuracy. Cohen’s Kappa statistics were used to analyse repeatability of the scoring procedure through inter- and intra-observer agreement and Kruskal-Wallis ANOVA statistics to determine the effect of observer differences on the final age estimates. The usefulness of the age ranges were diminished by large widths encompassing up to 95 years. The accuracy for the point estimates fared better for the combined skeletal indicators and overall accuracy was improved by using the archaeological prior distribution. The archaeological prior distribution was also responsible for narrowing the age ranges, especially in the older ages (over 70 years). Age estimates did not differ significantly when using inter- and intra-observer scores, but experience with the method did seem to improve results. Overall, age ranges were too wide, but accuracy could potentially be improved by adding more skeletal components to the method and using a population-specific prior distribution. The method would need considerable adjustments to make it usable in a South African setting.
Dissertation (MSc)--University of Pretoria, 2014.
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Hughes, Bridgette Danielle. "MONITORING INSECTICIDE RESISTANCE MECHANISMS IN CULEX TARSALIS FROM SUTTER COUNTY, CALIFORNIA." Scholarly Commons, 2017. https://scholarlycommons.pacific.edu/uop_etds/2974.

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Culex mosquitoes are known for carrying several harmful viruses in the United States. Culex tarsalis is found in rural as well as some residential areas in the Western United States, so they are under insecticide pressure from both agricultural spraying and vector control. In response to insecticide pressure, mosquitoes can evolve two primary resistance mechanisms: target site insensitivity, as a result of DNA mutation, and elevated levels of detoxifying enzymes (GST, alpha and beta esterases, and P450 oxidases). The two types of target site insensitivity studied here in Cx. tarsalis are kdr, which is a mutation in the para-type voltage gated sodium channel and ace-1, which is a mutation in acetylcholinesterase gene. This study focused on a population of Cx. tarsalis in Sutter County, where insecticide use shifted from sumithrin to Naled over the course of the summer. The goal of this study was to determine if there was resistance to insecticides and characterize the mechanisms of resistance. Mosquitoes were separated into resistance levels based on CDC bottle bioassay results using Naled, sumithrin, and permethrin insecticides. Mosquitoes were used to test for elevated levels of detoxifying enzymes and genetic qPCR testing for either kdr and ace-1 mutations. Bottle bioassay results suggest Cx. tarsalis populations from Sutter County are mostly resistant to pyrethroids while not being resistant to organophosphates. Enzymatic assays suggest high concentrations or activities of detoxifying enzymes are commonly seen in resistant individuals, occasionally elevated levels of multiple enzymes within an individual. The ace-1 mutation was seen in a single susceptible individual (0.036%). Either one or two kdr alleles were present in every single semi-resistant or resistant mosquito tested.
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Books on the topic "Suture age"

1

John Sutter: California pioneer. New York: Rosen Central Primary Source, 2004.

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John Sutter: Pionero de California. New York: Editorial Buenas Letras/Rosen, 2004.

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John Sutter: California pioneer = pionero de California. New York: Rosen Central Primary Source/Editorial Buenas Letras, 2003.

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Hosaka, Takashi. Zui wu you de lao hou: Jing shen ke ming yi dai ni yuan li shou ling you yu de 76 ge kuai le ti an = Rōgo no iraira o suteru gijutsu. Taibei Shi: San cai wen hua chu ban shi ye you xian gong si, 2013.

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Hsieh, Hannah, Lauren Thornton, and Glenn Mann. Craniosynostosis and Anesthetic Management for Cranial Vault Remodeling. Edited by David E. Traul and Irene P. Osborn. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190850036.003.0015.

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Craniosynostosis is a congenital malformation involving premature fusion of one or more skull sutures restricting normal growth of the cranium. The sequelae of premature cranial suture fusion are not only cosmetic and may cause elevated intracranial pressure in children. Treatment for craniosynostosis is surgical, and the perioperative management often entails a multidisciplinary team consisting of neurosurgery, plastic surgery, anesthesiology, and critical care. Although the optimal age of repair remains controversial, it is suggested that intervention is best performed prior to 12 months of age. The anesthetic challenges for these complex surgeries include difficult airway management, significant blood loss, long surgical duration, and pain control in children of young age.
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McCabe, Sam, Christopher Harnain, and Grigory Rozenblit. Percutaneous Placement of a Temporary Large-Bore Biliary Endoprosthesis. Edited by S. Lowell Kahn, Bulent Arslan, and Abdulrahman Masrani. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199986071.003.0084.

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This chapter describes construction of a temporary large-bore biliary endoprosthesis from a standard pigtail drainage catheter. Management of benign common duct biliary strictures often requires multiple interventions and leaves the patient with an indwelling biliary catheter for a prolonged time course. Commercially available plastic, bare-metal, and covered metal biliary stents are not ideally suited for the management of benign strictures. The endoprosthesis is cut to length and then positioned, deployed, and tethered to the abdominal wall with an absorbable suture. After the suture dissolves in several months, the catheter is propelled into the intestine by peristalsis and expelled without the need for an additional procedure.
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Karlberg, Helena. Craniosynostosis Repair. Edited by Erin S. Williams, Olutoyin A. Olutoye, Catherine P. Seipel, and Titilopemi A. O. Aina. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190678333.003.0023.

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Craniosynostosis is the fusion of one or more cranial sutures; such fusion occurs due to multiple factors and typically occurs in utero. Depending on the sutures involved, the infant can have significant abnormalities in skull shape. The structural abnormality is corrected surgically, frequently after a series of operations starting from infancy and occurring even late in childhood, depending on the sutures that are fused. During these surgeries, an infant can lose substantial volumes of blood, increasing the risk of hypovolemia and venous air embolism. It is imperative for the pediatric anesthesiologist to employ various modalities to minimize blood loss and also recognize clinical signs indicating the need for transfusion.
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Howe, Peter. Craniosynostosis Repair. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199764495.003.0028.

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Craniosynostosis is a condition in which one or more of the fibrous sutures in an infant skull fuses prematurely. This may lead to restricted skull and brain growth and elevated intracranial pressure. Many children with craniosynostosis undergo corrective cranioplasty in infancy, an age when the skull is relatively large in proportion to the rest of the body. Depending on the operation, it is common for blood loss to be substantial and exceed the child's estimated blood volume (EBV). Managing this blood loss is challenging and requires careful planning for fluid and blood product administration. Some children also have craniofacial syndromes that are associated with airway obstruction and difficult intubation.
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Wohlbier, Thomas. Nanohybrids. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901076.

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The book covers preparation, designing and utilization of nanohybrid materials for biomedical applications. These materials can improve the effectiveness of drugs, promote high cell growth in new scaffolds, and lead to biodegradable surgical sutures. The use of hybrid magneto-plasmonic nanoparticles may lead to non-invasive therapies. The most promising materials are based on silica nanostructures, polymers, bioresorbable metals, liposomes, biopolymeric electrospun nanofibers, graphene, and gelatin. Much research focuses on the development of biomaterials for cell regeneration and wound healing applications.
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Robb, Laurence, and Andrew Mitchell. Mineral Deposits of Myanmar (Burma). Society of Economic Geologists, 2021. http://dx.doi.org/10.5382/gb.62.

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Myanmar is richly endowed in natural resources that include tin, tungsten, copper, gold, zinc, lead, nickel, and silver, as well as gemstones. The material covered over a nine-day field trip explores the country’s complex geology, which reflects a collisional history stretching from the Late Triassic to at least Miocene, sited at the eastern end of the India-Asia suture. The country can be divided into three principal metallotects: the Wuntho-Popa magmatic arc, with granites and associated porphyry-type and epithermal Cu-Au mineralization; the Slate Belt (also called the Mogok-Mandalay-Mergui Belt), with multiple precollisional I-type and postcollisional S-type crustal melt granites that host significant tin-tungsten mineralization, and which also are host to a number of orogenic gold deposits; and the Shan Plateau with massive sulfide-type and also MVT-style lead-zinc-silver deposits.
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Book chapters on the topic "Suture age"

1

Rinaldi, A., E. Pacciani, and M. Di Bacco. "Age at Death Diagnosis by Cranial Suture Obliteration: A Bayesian Approach." In Applied Bayesian Statistical Studies in Biology and Medicine, 239–49. Boston, MA: Springer US, 2004. http://dx.doi.org/10.1007/978-1-4613-0217-9_12.

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Téot, Luc, Sergiu Fluieraru, and Christian Herlin. "Suture Edge Tension Control Technologies for Scar Improvement." In Textbook on Scar Management, 497–502. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44766-3_57.

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AbstractMechanotherapy of postoperative scarring is considered an effective measure to prevent pathological scars. Tension increases suture line enlargement, opening the way to infection. Several options have been proposed since decades and are currently used in practice, from adhesive sutures to adhesive dressings, reapproximation devices, and postoperative negative pressure. Closed incision negative pressure therapy (ciNPT) was recently proposed in at-risk patients, showing a significant difference in prevention of infection. These technologies offer a double effect of mechanical stabilization and aspiration of exudates and have recently been extended to different clinical indications. This chapter describes the recently developed technologies to diminish scar enlargement on a suture line and to prevent infection after extensive surgical procedures in thoracic, abdominal, plastic and orthopedic surgery.
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Chien, Chi-Hui, Yii-Der Wu, and Yuh J. Chao. "The Effects of Different Cranial Size on Mechanical Properties of Cranial Suture in Rat and Same-Aged Mice." In Experimental Analysis of Nano and Engineering Materials and Structures, 879–80. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6239-1_437.

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de la Cruz, Julia E., Francisco M. Sánchez-Margallo, and Federico Soria. "Ureteral Stent Designs to Reduce Stent-Related Symptoms and Improve Patient Quality of Life." In Urinary Stents, 85–93. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-04484-7_8.

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AbstractConsidering the impact on the quality of life of patients caused by double-J stents, different strategies have been developed to improve their performance. The exploration of new ureteral stent designs is one of the main pathways, along with the development of materials and coatings. Innovations on stent design have focused on the improvement of patient comfort by mainly decreasing or suppressing vesicoureteral reflux and reducing bladder trigone irritation. Many of these designs are based on changes at the distal end, such as antireflux stents, tail stents, suture stents and intraureteral stents. The trend is therefore towards the reduction of the presence of stent material at the level of the ureterovesical junction. However, the indications of these new designs do not correspond to those of a standard ureteral stent and may be more limited. This will most likely lead to the development of more specific devices adapted to each of the different indications for stenting, with the aim of avoiding stent-related adverse effects that result from the generalized use of standard designs.
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Eberle, Noreen, Jessica Lütgens, Andrea Pohling, Tina Spies, and Petra Bauer. "Biographical Articulation in Transition." In Life Course Research and Social Policies, 139–53. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-13512-5_9.

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AbstractBiographical research approaches have been relevant for the analysis of transitions in the life course for a long time. From the beginning of a social science-based analysis of (auto-)biographical narratives, the “biography” as concept was oriented towards understanding the relationship between the development of individual identity against the background of collective phenomena as well as in their relevance for life histories. But biographical narrations are also connected to discourses and discursive orientation patterns. The concept of “articulation” in the sense of Stuart Hall allows for the building of a bridge between discourses and subject positions, in describing this as a suture between discourses and a subject. Based on the re-analysis of three narrative interviews which are linked to different biographical research projects, the article explains and illustrates three different modi of articulation linked to relevant biographical transitions. All three modi of articulation are examples that show the complexity and variety of social positioning and articulation in biographical turning points. At the end the article discusses the added value and the possibilities of this approach in understanding transitions in life courses from a biographical perspective.
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Ogawa, Rei. "Ideal Wound Closure Methods for Minimizing Scarring After Surgery." In Textbook on Scar Management, 185–91. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44766-3_21.

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AbstractWound-healing phenomena are the result of a cascade of complex biochemical events that can be categorized into four general overlapping phases: coagulation, inflammation, proliferation, and remodeling. Significantly, all four phases of wound healing are influenced by both intrinsic and extrinsic mechanical forces. These mechanical forces provoke chronic inflammation of the dermis, namely, the unceasing influx and activation of inflammatory cells, the persistent generation of blood vessels and nerve fibers, and the constant production of collagen by the activated fibroblasts. This chronic inflammation blocks the conversion of the granulation tissue into dermis-like tissue by the remodeling process and results in an immature hypertrophic scar that is red, elevated, hard, and painful. These observations suggest that, to prevent pathological scarring after surgery, it is necessary to ensure that the sutures cause the wound edges to adhere to each other without any tension, even when strong extrinsic forces are placed on the wound. This will allow the granulation tissue to convert smoothly into dermis-like tissue, thereby yielding minimal scarring. Another way to prevent pathological scar formation in high-tension areas is to use zigzag suturing techniques such as the Z-plasty.
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Proctor, Mark, and Ali Hazama. "Sagittal Synostosis." In Pediatric Neurosurgery, 73–81. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780190617073.003.0009.

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Sagittal synostosis is the most common type of craniosynostosis and classically presents with an elongated head shape combined with frontal bossing, ridging along the sagittal suture, and a narrow and prominent occiput. The fused sagittal suture limits the biparietal expansion of the head and results in the scaphocephalic head shape. Imaging is often not necessary to establish an accurate diagnosis. Both open and endoscopic minimally invasive repair can be considered for children less than 4–6 months of age. Endoscopic surgery is increasingly being performed, as this option has significantly less blood loss, requires less anesthesia time, and is well tolerated by the patient compared to the open technique. Post-operative adjuvant therapy with a cranial orthosis is essential to redirect skull growth and prevent early refusion of the craniotomy. Attentiveness to identifying air embolisms can prevent major complications during surgery.
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Willner, A. P., C. R. van Staal, J. Glodny, M. Sudo, and A. Zagorevski. "Conditions and timing of metamorphism near the Baie Verte Line (Baie Verte Peninsula, NW Newfoundland, Canada): Multiple reactivations within the suture zone of an arc-continent collision." In New Developments in the Appalachian-Caledonian- Variscan Orogen. Geological Society of America, 2022. http://dx.doi.org/10.1130/2022.2554(09).

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ABSTRACT The Baie Verte Line in western Newfoundland marks a suture zone between (1) an upper plate represented by suprasubduction zone oceanic crust (Baie Verte oceanic tract) and the trailing continental Notre Dame arc, with related upper-plate rocks built upon the Dashwoods terrane; and (2) a lower plate of Laurentian margin metasedimentary rocks with an adjoining ocean-continent transition zone (Birchy Complex). The Baie Verte oceanic tract formed during closure of the Taconic seaway in a forearc position and started to be obducted onto the Laurentian margin between ca. 485 and 476 Ma (early Taconic event), whereas the Birchy Complex, at the leading edge of the Laurentian margin, was subducted to maximum depths as calculated by pseudosection techniques (6.7–11.2 kbar, 315–560 °C) by ca. 467–460 Ma, during the culmination of the Taconic collision between the trailing Notre Dame arc and Laurentia, and it cooled isobarically to 9.2–10.0 kbar and 360–450 °C by 454–449 Ma (M1). This collisional wedge progressively incorporated upper-plate Baie Verte oceanic tract rocks, with remnants preserved in M1 high-pressure, low-temperature greenschist-facies rocks (4.8–8.0 kbar, 270–340 °C) recording typical low metamorphic gradients (10–14 °C/km). Subsequently, the early Taconic collisional wedge was redeformed and metamorphosed during the final stages of the Taconic cycle. We relate existing and new 40Ar/39Ar ages between 454 and 439 Ma to a late Taconic reactivation of the structurally weak suture zone. The Taconic wedge on both sides of the Baie Verte suture zone was subsequently strongly shortened (D2), metamorphosed (M2), and intruded by a voluminous suite of plutons during the Salinic orogenic cycle. Calculated low- to medium-pressure, low-temperature M2 conditions in the Baie Verte oceanic tract varied at 3.0–5.0 kbar and 275–340 °C, with increased metamorphic gradients of ~17–25 °C/km during activity of the Notre Dame arc, and correlate with M2 assemblages in the Birchy Complex. These conditions are associated with existing Salinic S2 white mica 40Ar/39Ar ages of ca. 432 Ma in a D2 transpressional shear zone and synkinematic intrusions of comparable age. A third metamorphic event (M3) was recorded during the Devonian with calculated low-pressure, low-temperature conditions of 3.2–3.8 kbar and 315–330 °C under the highest metamorphic gradients (23–30 °C/km) and associated with Devonian–early Carboniferous isotopic ages as young as 356 ± 5 Ma. The youngest ages are related to localized extension associated with a large-scale transtensional zone, which reused parts of the Baie Verte Line suture zone. Extension culminated in the formation of a Middle to Late Devonian Neoacadian metamorphic core complex in upper- and lower-plate rocks by reactivation of Baie Verte Line tectonites formed during the Taconic and Salinic cycles. The Baie Verte Line suture zone is a collisional complex subjected to repeated, episodic structural reactivation during the Late Ordovician Taconic 3, Silurian Salinic, and Early–Late Devonian Acadian/Neoacadian orogenic cycles. Deformation appears to have been progressively localized in major fault zones associated with earlier suturing. This emphasizes the importance of existing zones of structural weakness, where reactivation took place in the hinterland during successive collision events.
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Clark, Robin D., and Cynthia J. Curry. "Craniosynostoses." In Genetic Consultations in the Newborn, edited by Robin D. Clark and Cynthia J. Curry, 91–100. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780199990993.003.0013.

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This chapter reviews background information about the incidence, risk factors, genetics, recurrence risk, and epidemiology of single suture and multiple suture craniosynostosis including isolated and syndromic varieties. The discussion on the differential diagnosis of craniosynostosis summarizes its common causes, including teratogenic agents (fluconazole, maternal thyroid disorders, methotrexate, valproic acid), chromosome anomalies, and Mendelian disorders that involve extracranial malformations. The relationship between premature closure of cranial sutures of postnatal onset and positional plagiocephaly, prematurity, and microcephaly are examined. This chapter provides recommendations for testing, evaluation and management. A clinical case presentation features an infant with Saethre–Chotzen syndrome, whose mildly affected relatives had not been diagnosed.
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Friedman, Jeffrey D., Scott W. Mosser, and Eric Ruff. "Material." In Operative Plastic Surgery, edited by Gregory R. D. Evans, 33–40. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780190499075.003.0004.

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A variety of materials are available for the operative closure of open surgical wounds. A working knowledge of the various properties and characteristics of the various suture materials is essential to the decision-making process for use of these materials. Such consideration includes whether the suture is monofilament or braided, permanent or dissolvable; the inherent tensile strength of the chosen material; and the wound environment in which the material will be placed. Recent modifications of these materials include the advent of barbed, locking sutures and the availability of a number of newer tissue adhesives and have contributed to the surgeon’s armamentarium of materials available to adequately close the variety of challenging wounds that are seen in surgical practice.
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Conference papers on the topic "Suture age"

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Marchiori, Julia Gabriela Oliveira, Jennyfer Paulla Galdino Chaves, Maria Cecilia Closs Ono, and Adriana Keijiro Maeda. "Trigonocephaly associated with myelomeningocele in infant: Case report." In XIII Congresso Paulista de Neurologia. Zeppelini Editorial e Comunicação, 2021. http://dx.doi.org/10.5327/1516-3180.040.

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Context: Trigonocephaly is a type of craniostenosis due to the early closure of the metopic suture. His diagnosis is eminently clinical, but imaging tests are essential. The recommended treatment is surgical and should preferably be performed at the age of 3 to 9 months. Association between craniosynostosis and neural tube defect (NTDs) is rare and was sometimes considered as mere coincidence. However, Martinez-Lage et al. hypothesize that there is a causal relationship between these malformations since myelomeningocele reduces intracranial pulse pressure, which stimulates the early closure of cranial sutures. For Graham et al. the restriction of fetal movements in NTD carriers predisposes to craniosynostosis, as they are likely to keep the skull fixed against the mother’s pelvic bones. Case report: Male patient, 11 months, with West Syndrome. He congenitally presented myelomeningocele, and this deformity was corrected on his first day of life. He subsequently developed a keel-shaped forehead, protrusion of metopic suture, and hypertelorism. The diagnosis of trigonocephaly was ratified by computed tomography of the skull with three-dimensional reconstruction. Surgery was performed at 11 months. The access chosen was coronal and there was a wide exposure of the calvarium. Then all the metopic suture was removed through a bifrontal craniotomy, which allowed the remodeling of the frontal bone. Conclusions: It is necessary to make a diagnosis and early treatment of both comorbidities since delays in the conduct can result in disastrous consequences. In addition, there is a need to conduct more research to elucidate the interrelationship between craniosynostosis and NTD.
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Baumer, Timothy G., Brian J. Powell, Todd W. Fenton, and Roger C. Haut. "Age Dependent Mechanical Properties of the Infant Porcine Parietal Bone and a Correlation to the Human." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206214.

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An infant less than 18 months of age with a skull fracture has a 1 in 3 chance of abuse [1]. While the parietal bone is most often the site of fracture, an abusive situation is difficult to diagnose based on characteristics of the fracture alone [2]. Age of the child is one important factor in determining abuse. Injury biomechanics are often used in the investigation of cases suspected to involve child abuse [3]. In addition to case-based investigations, computer modeling, and test dummies, animal model studies can aid in these investigations. While the relationship between animal studies and human pediatric patients is yet unclear, some animal models have emerged in the current literature. A study by Margulies and Thibault [4] made an attempt to correlate the mechanical behavior of human infant cranial bone to porcine infant cranial bone. The study suggests that weeks of pig age may correlate to months in the human. Yet, an 18 week old pig is considered to be in adolescence. The current study was conducted to determine the mechanical properties of parietal bone and coronal suture in porcine infants of a younger age than previous studies and correlate the bending properties of the bone to existing human data.
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Weaver, Kyle, Jeong-Hoi Koo, Tae-Heon Yang, and Young-Min Kim. "Capturing Age-Dependent Properties of Human Skin Using Magnetorheological Elastomers." In ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/smasis2018-8015.

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Artificial and synthetic skins are widely used in the medical field; used in applications ranging from skin grafts to suture training pads. There is a growing need for artificial skins with tunable properties. However, current artificial skins do not take into account the variability of mechanical properties between individual humans as well as the age-dependent properties of human skin. Furthermore, there has been little development in artificial skins based on these properties. Thus, the primary purpose of this research is to develop variable stiffness artificial skin samples using magnetorheological elastomers (MREs) whose properties that can be controlled using external magnetic fields. In this study, multiple MRE skin samples were fabricated with varying filler particle volume contents. Using a precision dynamic mechanical analyzer, a series of indenting experiments were performed on the samples to characterize their mechanical properties. The samples were tested using a spherical indenter that indented a total depth of 1 mm with a speed of 0.01 mm/s and unloaded at the same rate. The results show that the modulus or stiffness increases significantly as the iron percent (w/w) in the sample increases. Additionally, the stiffness of the sample increases proportional to the intensity of the applied external magnetic field. To assess the MRE samples’ variability of properties, the testing results were compared with in vivo human skin testing data. The results show the MRE samples are feasible to represent the age-dependent stiffness demonstrated in in vivo human skin testing. The MRE materials studied will be further studied as a variable-stiffness skin model in medical devices, such as radial pulse simulators.
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"Mesozoic Tectonic Setting of SE Sundaland After Magmatism and Suture Evidences in JS-1 Ridge Area." In Indonesian Petroleum Association 44th Annual Convention and Exhibition. Indonesian Petroleum Association, 2021. http://dx.doi.org/10.29118/ipa21-g-14.

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Mesozoic plate convergence in SE Sundaland has been a source of debate for decades. A determination of plate convergence boundaries and timing have been explained in many publications, but not all boundaries were associated with magmatism. Through integration of both plate configurations and magmatic deposits, the basement can be accurately characterized over time and areal extents. This paper will discuss Cretaceous subductions and magmatic arc trends in SE Sundaland area with additional evidence found in JS-1 Ridge. At least three subduction trends are captured during the Mesozoic in the study area: 1) Early Jurassic – Early Cretaceous trend of Meratus, 2) Early Cretaceous trend of Bantimala and 3) Late Cretaceous trend in the southernmost study area. The Early Jurassic – Early Cretaceous subduction occurred along the South and East boundary of Sundaland (SW Borneo terrane) and passes through the Meratus area. The Early Cretaceous subduction occurred along South and East boundary of Sundaland (SW Borneo and Paternoster terranes) and pass through the Bantimala area. The Late Cretaceous subduction occurred along South and East boundary of Sundaland (SW Borneo, Paternoster and SE Java – South Sulawesi terranes), but is slightly shifted to the South approaching the Oligocene – Recent subduction zone. Magmatic arc trends can also be generally grouped into three periods, with each period corresponds to the subduction processes at the time. The first magmatic arc (Early Jurassic – Early Cretaceous) is present in core of SW Borneo terrane and partly produces the Schwaner Magmatism. The second Cretaceous magmatic arc (Early Cretaceous) trend is present in the SW Borneo terrane but is slightly shifted southeastward It is responsible for magmatism in North Java offshore, northern JS-1 Ridge and Meratus areas. The third magmatic arc trend is formed by Late Cretaceous volcanic rocks in Luk Ulo, the southern JS-1 Ridge and the eastern Makassar Strait areas. These all occur during the same time within the Cretaceous magmatic arc. Though a mélange rock sample has not been found in JS-1 Ridge area, there is evidence of an accretionary prism in the area as evidenced by the geometry observed on a new 3D seismic dataset. Based on the structural trend of Meratus (NNE-SSW) coupled with the regional plate boundary understanding, this suggests that both Meratus & JS-1 Ridge are part of the same suture zone between SW Borneo and Paternoster terranes. The gradual age transition observed in the JS-1 Ridge area suggests a southward shift of the magmatic arc during Early Cretaceous to Late Cretaceous times.
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Powell, Brian J., Nicholas V. Passalacqua, Timothy G. Baumer, Todd W. Fenton, and Roger C. Haut. "Fracture Patterns on the Infant Porcine Skull Following Severe Blunt Impact." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19566.

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There is a 1 in 3 chance of abuse in a case where a child less than 18 months has a skull fracture [1]. The most commonly fractured site on the skull is the parietal bone, however it is currently difficult to establish the causation of injury based on the characteristics of the injury [2]. Thus, injury biomechanics are often utilized in the investigation of suspected child abuse cases [3]. Computer simulations, test dummies, and animal models are all used as aids in the assessment of skull fracture causation. For a given impact situation, a number of variables can control the pattern of skull fracture. A study by Baumer et. al assessed the effects of interface and age using an infant porcine skull model, specifically looking at the location of fracture initiation on the parietal bone [4]. This study showed that in low energy impacts fracture initiation occurs at the bone-suture boundary. Also, a deformable interface caused more fracture than a rigid interface for very young subjects. The current study was conducted to assess the effects of higher energy impacts on the patterns of fracture in this model.
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Kennington, Jeffrey R., Steven Frankel, Jun Chen, Mark D. Rodefeld, and Guruprasad A. Giridharan. "Design of a Novel Cavopulmonary Assist Device for Fontan Procedures: CFD, PIV, and Hydraulic Testing." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19558.

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Single ventricle heart disease is the leading cause of death for birth defects in children under one years of age [1]. The current surgical procedure requires the use of a shunt for the first stage of the surgery. The following surgeries remove the shunt but cannot be performed on a newborn due to higher lung resistance during the first weeks of life. The overall surgical process, known as the Fontan procedure, results in a reconstructed anatomy where the left and right pulmonary arteries are sutured to the superior and inferior vena cavae (SVC/IVC), hence bypassing the right heart. This anatomy is called a total cavopulmonary connection or TCPC.
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Funda, Dragutin, Ivana Franić, and Goran Funda. "Ekološka kriza i hrvatska odgovornost." In Kvaliteta-jučer, danas, sutra (Quality-yesterday, today, tomorrow), edited by Miroslav Drljača. Croatian Quality Managers Society, 2021. http://dx.doi.org/10.52730/kwez7441.

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Sažetak: Sociološkim osvrtom ekološku krizu promatramo kao fenomen začet u industrijskom dobu, dok filozofskim osvrtom uvodimo čitatelja u početke filozofske ekološke misli, tzv. dubinsku ekologiju. Obrađuje se pojam bioetike čija načela su sadržana u svakom obliku održivog razvoja. Ekonomski osvrt prikazuje kako je nastao sustav novih vrijednosti poslovanja, etos, i kako ekonomski padovi uzrokuju ne samo ekološku krizu, već i mnogo pogubnije oblike kriza. Bavljenjem posljedicama ekonomskog rasta i pratećih pojava ekološke krize zanemario se cjelokupan pogled u društveno uređenje budućnosti. Održivi razvoj uzima u obzir vremenski odmak i razmatra kako današnje odluke i kreacije utječu na budućnost, okoliš, socijalno-ekonomske i ekološke promjene. U radu se objašnjava politika održivog razvoja Europske unije te odgovornost Republika Hrvatska u kontekstu ekološke krize. Kao primjer praktične provedbe ekoloških akcija navodi se Fond za zaštitu okoliša i energetsku učinkovitost. Abstract: With a sociological review, we view the ecological crisis as a phenomenon conceived in the industrial age, while with a philosophical review I introduce the reader to the beginnings of philosophical ecological thought, the so-called deep ecology. The notion of bioethics is discussed, the principles of which are contained in every form of sustainable development. The economic review shows how the system of new business values, ethos, emerged, and how economic downturns cause not only an ecological crisis, but also much more devastating forms of crisis. Dealing with the consequences of economic growth and the accompanying phenomena of the ecological crisis, the entire view of the social order of the future has been neglected. Sustainable development takes into account the passage of time and considers how today's decisions and creations affect the future, the environment, socio-economic and environmental changes. The paper explains the policy of sustainable development of the European Union and the responsibility of the Republic of Croatia in the context of the ecological crisis. The Fund for Environmental Protection and Energy Efficiency is cited as an example of the practical implementation of environmental actions.
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Kopchok, George E., Carlos Donayre, Massoud Haji-Aghaii, and Rodney A. White. "Catheter Delivered, Endoluminal Grafts for Repair of Abdominal Aortic Aneurysm." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0065.

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Abstract The evolution of endovascular surgery is rapidly expanding the armamentarium available for minimally invasive surgical procedures. This is especially true in the area of aortic aneurysm repair. Endoluminal graft development which began over 20 years ago, was limited by the inability to successfully secure a graft to the arterial wall without the aid of sutures. With the development of the balloon expandable stent by Palmaz, newer devices were developed and tested which led to the first clinical evaluation in 1990. Although the overall results from this series were very good, the deployment techniques, as well as the endoluminal grafts, underwent several refinements which greatly improved their later results.(Parodi et al., 1991) Newer advances, including fully supported, bifurcated endoluminal grafts, are continuing to push the envelope of minimally invasive endoluminal bypass surgery even further. Initial studies described herein suggest that a modular, self expanding device may be effective in the treatment and exclusion of aortic aneurysm.
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Chahal, Amandeep, and Pushpa Dahiya. "Evaluation of ovarian reserve in women undergoing ovarian cystectomy by laparoscopy and laparotomy." In 16th Annual International Conference RGCON. Thieme Medical and Scientific Publishers Private Ltd., 2016. http://dx.doi.org/10.1055/s-0039-1685295.

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Ovarian cysts are one of the commonest problems encountered in the gynecological field. Majority of these cysts are functional i.e., disappear spontaneously, while few need cystectomy. Ovarian cystectomy is done by laparotomy and laparoscopic technique. The method to achieve haemostasis in the ovarian bed after cyst removal varies with the type of technique. Electrocoagulation is used to achieve haemostasis in laparoscopic cystectomy while the bleeding vessels are sutured for haemostasis in cystectomy by laparotomy. Both the modalities of management varies in terms of compromise of ovarian reserve. The study was carried out to evaluate the surgical impact of benign ovarian masses on ovarian reserve as measured by serum levels of antimullerian harmone. In this prospective study on 30 women of reproductive age group with benign ovarian masses, 15 women were enrolled for laparoscopic ovarian cystectomy and another 15 women were enrolled for cystectomy by laparotomy and ovarian reserve was measured by levels of serum AMH preoperatively, postoperative one week and postoperative 3 months using standard ELISA assay kit. The preoperative, postoperative one week and postoperative 3 months levels of mean AMH were 4.74 ± 1.86 ng/ml, 2.92 ± 1.45 ng/ml and 2.64 ± 0.96 ng/ml respectively, in women undergoing laparoscopic cystectomy and 3.98 ± 1.35 ng/ml, 2.48 ± 0.64 ng/ml and 2.11 ± 0.63 ng/ml respectively in women undergoing ovarian cystectomy by laparotomy. So there was decline of mean AMH levels in postoperative one week and postoperative 3 months samples in both of the groups of enrolled women. However, this decline varied with the type of cyst removed and is insignificantly greater in laparoscopy group, wherein electrocoagulation may cause extensive and sustained damage to ovarian tissue.
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Reports on the topic "Suture age"

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Ryan, J. J., A. Zagorevski, N. R. Cleven, A J Parsons, and N. L. Joyce. Architecture of pericratonic Yukon-Tanana terrane in the northern Cordillera. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/326062.

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West-central Yukon and eastern Alaska are characterized by widespread metamorphic rocks that form part of the allochthonous, composite Yukon-Tanana terrane and parautochthonous North American margin. Structural windows through the Yukon-Tanana terrane expose parautochthonous North American margin in that broad region, particularly as mid-Cretaceous extensional core complexes. Both the Yukon-Tanana terrane and parautochthonous North American margin share the same Late Devonian history, making their discrimination difficult; however, distinct post-Late Devonian magmatic and metamorphic histories assist in discriminating Yukon-Tanana terrane from parautochthonous North American margin rocks. The suture between Yukon-Tanana terrane and parautochthonous North American margin is obscured by many episodes of high-strain deformation. Their main bounding structure is probably a Jurassic to Cretaceous thrust, which has been locally reactivated as a mid-Cretaceous extensional shear zone. Crustal-scale structures within composite Yukon-Tanana terrane (e.g. the Yukon River shear zone) are commonly marked by discontinuous mafic-ultramafic complexes. Some of these complexes represent orogenic peridotites that were structurally exhumed into the Yukon-Tanana terrane in the Middle Permian.
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