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Dissertations / Theses on the topic 'Lumbar vertebrae'
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1
Jönsson, Bo. "Lumbar nerve root compression syndromes symptoms, signs and surgical results /." Lund : Dept. of Orthopedics, University Hospital, 1995. http://catalog.hathitrust.org/api/volumes/oclc/38155579.html.
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Axelsson, Paul. "On lumbar spine stabilization." Lund : Dept. of Orthopedics, Lund University Hospital, 1996. http://catalog.hathitrust.org/api/volumes/oclc/38045390.html.
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Goubeaux, Craig A. "The Accuracy of Measuring Lumbar Vertebral Displacements Using a Dynamic MRI Sequence." Ohio University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1480436812645944.
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Wong, Peter. "Biomechanical comparison of lumbar disc replacements." View the abstract Download the full-text PDF version, 2009. http://etd.utmem.edu/ABSTRACTS/2009-014-Wong-index.htm.
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Thesis (M.S.)--University of Tennessee Health Science Center, 2009.Title from title page screen (viewed on October 8, 2009). Research advisor: Denis DiAngelo, Ph.D. Document formatted into pages (viii, 75 p. : ill.). Vita. Abstract. Includes bibliographical references (p. 34-38).
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Leja, Eliza. "Analysis of spatial discrimination in the lumbar spine of normal man." Thesis, Uppsala universitet, Statistiska institutionen, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-226986.
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A clinical study was performed in order to determine if healthy test subjects can differentiate between adjacent and separated pairs of vertebrae in the lumbar spine. The variable of interest was number of correctly specied pairs of vertebrae. The test subjects were evaluated in terms of sensitivity and specicity of this test. Bootstrap resampling was applied in the data analysis. The results clearly indicated that the test subjects in this study were able to successfully determine whether a pair of adjacent or separated vertebrae was tested during the procedure.
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Smith, April K. "Aging of the Lumbar Vertebrae Using Known Age and Sex Samples." Digital Archive @ GSU, 2010. http://digitalarchive.gsu.edu/anthro_theses/45.
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The dimensions of the lumbar vertebrae are examined in order to determine if these measurements can be used to predict the age of an individual, and if the lumbar vertebrae exhibit sexual dimorphism. Various statistical techniques were utilized to analyze several dimensions of the lumbar vertebrae. Aging patterns in the lumbar elements are distinct between males and females, and females exhibit compression of the L3 element, which may be related to vertebral wedging. Some dimensions of the lumbar vertebrae are sexually dimorphic.
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Zheng, Yalin. "Automated segmentation of lumbar vertebrae for the measurement of spine kinematics." Thesis, University of Southampton, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288154.
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Gunji, Harumoto. "Analyses of Aging Changes in Lumbar Vertebrae of Primates with DXA." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/149155.
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Siqueira, Dayana Pousa Paiva de. "Análise fotoelástica de modelo de vértebra sob influência de parafuso pedicular." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/17/17142/tde-28052008-142816/.
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O sistema de fixação vertebral utilizando o parafuso pedicular é um dos métodos mais eficientes no tratamento de patologias da coluna vertebral. Quando o parafuso estiver submetido à força de arrancamento, ele gera tensões ao redor, principalmente próximo do canal medular, situação que pode ser analisada pela técnica da fotoelasticidade. O objetivo foi analisar as tensões internas geradas em modelos fotoelásticos de vértebras, utilizando diferentes medidas de parafusos do sistema de fixação vertebral, submetidos à força de arrancamento. Foi utilizado um modelo de vértebra lombar em material fotoelástico utilizando três medidas de diâmetros externos de parafusos pediculares (5, 6 e 7mm) do tipo USS1. As tensões internas ao redor do parafuso foram avaliadas em 18 pontos pré-determinados utilizando um polariscópio de transmissão plana. As regiões de maiores concentrações de tensões foram observadas entre o canal medular e as curvas do processo transverso. Nas comparações das médias das tensões cisalhantes entre os parafusos 5 e 7mm, e 6 e 7mm foram observadas diferenças estatísticas significativas, o que não ocorreu com os parafusos de 5 e 6mm onde não foram observadas diferenças estatisticamente significativas. Foi observado que as tensões internas são mais elevadas em áreas irregulares próximas do canal medular, o que sugere ser uma região crítica, em termos de esforços mecânicos.The system of vertebrae fixation using the pedicular screw is one of the most efficient methods to treat vertebral spine pathologies. When the screw is submitted to pullout strength, it causes internal stress near the medullary canal and this situation can be analyzed using the photoelasticity technique. The objective of this study was to examine the internal stress of a photoelastic vertebrae model using different sizes of screws for the vertebral fixation submitted to pulling out. A lumbar vertebral model made of photoelastic material with three different pedicular screw sizes (5, 6 and 7mm), type USS1 was used. The internal stress around the screw were tested in 18 pre established points by a plain transmission polariscope. The areas of greater concentration of stress were placed between the medullary canal and the transverse process. Comparing the maximum average pulling out stress, statistical differences were observed between screws 5 and 7, and 6 and 7. On the other hand, when screws 5 and 6mm where compared no significant differences were found. This study identified that the internal stress are greater in irregular areas, near the medullary canal, suggesting that this may be a critical region.
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Pothuganti, Virabadra Phani Raju P. K. "Feasibility study of ultrasound measurements on the human lumbar spine." Auburn, Ala., 2006. http://hdl.handle.net/10415/1302.
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Ochia, Ruth Shada. "Mechanisms of axial compressive fracture in human lumbar spine /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/7997.
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Mok, Pik-sze, and 莫碧詩. "Lumbar endplate and modic changes, epidemiology, determinants and pain profiles in southern Chinese." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/206737.
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Intervertebral disc(IVD) degeneration is associated with low back pain (LBP).Despite the endplates are located adjacent to the IVD, the phenotypes of endplate and vertebral bone marrow changes remain unclear. The objective of this study is to assess the prevalence and the associated determinants of these phenotypes of the lumbar spine.
2449 Southern Chinese subjects (aged 10 –88 years) undergone sagittal T2-weighted magnetic resonance imaging (MRI)examination to assess the presence of endplate and vertebral bone marrow changes including Schmorl’s nodes (SN) and Modic changes (MC),respectively, and scored for additional radiographic features over the lumbar spine. Subjects’ demographics, clinical profile, and functional status were assessed by means of standardized questionnaires. Anovel6-domain SN morphological classification based on MRI was developed to further analyze the characteristics of SN and its association with disc degeneration (DD).
The prevalence of SN was 16.4%. Males, taller and heavier individuals had a significantly increased likelihood of SN. Overall presence of SN was age-independent, but was significantly associated with DD, and linearly correlated with increase in severity of DD. SN were particularly associated with severe DD at the upper two lumbar levels (L1/2 – L2/3).
Based on the SN classification system, specific SN characteristics and endplate linkage patterns were found. Of these, two SN types were identified:“Typical SN” and “Atypical SN”. “Typical SN” were those smaller size SN with various shapes that were frequently located at caudal endplates of L1/2–L3/4disc levels. One variant of “Atypical SN” were those rectangular shape SN, which predominantly located at the posterior region of the rostral endplates of L1/2–L2/3disc levels. The other variant of “Atypical SN” was larger size SN with irregular shape that frequently presented at the L4/5endplates, they were also likely to be associated with marrow changes. Despite “Atypical SN” only entailed 8.3% of all identified SN, they were associated with increased severity of DD than “Typical SN”.
Although the overall prevalence of MC among Southern Chinese was low (5.8%), after adjustments for other confounding factors, the presence of MC was associated with the presence and severity of LBP. Interestingly, the determinants of MC at upper (L1/2 – L3/4) and lower (L4/5 – L5/S1) lumbar showed distinct difference. The presence of MC at upper lumbar levels was only associated with the disc integrity only (i.e. the presence of disc displacement, and DD score), while the presence of MC at the lower levels, apart from the disc integrity, was also associated with increasing age, the presence of SN, smoking and obesity status.
This study is the largest MRI study assessing the phenotypes of endplate and vertebral bone marrow changes in-vivo. The prevalence and distribution of SN and MC vary throughout the lumbar spine, and there are level and region-specific variations regarding these phenotypes. Determinants of SN and MC may be similar but do vary, suggesting distinct etiological factors. Findings of this study broaden the understanding of the various phenotypes of the lumbar spine and its association with DD.published_or_final_version
Orthopaedics and Traumatology
Doctoral
Doctor of Philosophy
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Harvey, Steven Brian. "Interactive computer methods for morphometric and kinematic measurement of images of the spine." Thesis, University of Aberdeen, 1999. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU116153.
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The aim of this project was to develop robust interactive computer methods for measuring the shape and movement of the lumbar spine vertebrae from lateral radiographs of the spine. In order to achieve this aim, two software packages were written - the Aberdeen Vertebral Morphometry System (AVMS) and the Aberdeen Spinal Videofluoroscopy System (ASVS). AVMS was designed to analyse static images from dual energy x-ray absorptiometry (DXA) imaging densitometers. Comparative precision tests of the ability of AVMS software and Lunar EXPERT-XL software to measure vertebral height were undertaken using four vertebrae from the same lateral spine image (male, 67 years). Two of the vertebrae in this image were abnormal and two were normal. It was concluded that AVMS had higher precision when measuring abnormal and normal vertebrae. The effects of axial rotation and lateral bending, which lead to movement out of the sagittal plane, were investigated by generating a three-dimensional computer model of two adjacent vertebrae and projecting it on to the sagittal plane. The projected model was measured as if it were a radiograph, allowing the effects of out-of-plane movement and errors in reference point placement to be calculated. ASVS was used to acquire and analyse a sequence of images of the spine in motion obtained using videofluoroscopy and incorporated the findings of the computer modelling work. A clinical study for the measurement of intervertebral motion using ASVS during flexion-extension was organised and seven subjects suffering from severe lower back pain were recruited. Analysis of the image sequences using the computerised measurement system in ASVS revealed the apparent effect of analgesia/sedative on the shape and size of centroidal trajectories of vertebrae, and the differences in trajectory shape between subjects. It was concluded that ASVS was able to quantify spinal motion at a minimal radiation dose to the subject.
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Abbott, J. Haxby, and n/a. "Accuracy in the diagnosis of lumbar segmental mobility disorders." University of Otago. Department of Anatomy & Structural Biology, 2005. http://adt.otago.ac.nz./public/adt-NZDU20070205.094640.
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Background: In the clinical examination of patients with low back pain (LBP), musculoskeletal physiotherapists routinely assess lumbar spinal segmental motion by performing physical examination procedures such as observation of active range of motion and palpation of intervertebral motion. The validity of manual assessment of segmental motion, however, has not been adequately investigated.
Methods: In this pragmatic, multi-centre, criterion-related validity study, 138 consecutive patients with LBP were recruited and examined by physiotherapists with postgraduate training in musculoskeletal manual therapy. Clinicians examined each patient�s spine for the presence of segmental motion abnormalities, described as lumbar segmental rigidity (LSR) and lumbar segmental instability (LSI), then referred the patients for flexion-extension (FE) radiographs. The physical examination procedures of interest were: 1) assessment of forward-bending (FB) active range of motion (AROM); 2) FB and backward-bending (BB) passive physiological intervertebral motion testing (PPIVMs) in the sagittal plane; and 3) central postero-anterior passive accessory intervertebral motion testing (PAIVMs). Sagittal displacement kinematics of the lumbar spinal segments were measured from the FE radiographs, and served as the criterion standard against which the clinical assessment results were compared. The kinematic parameters measured were sagittal rotation, sagittal translation, ratio of translation per degree of rotation (TRR), instantaneous axis of rotation (IAR), and centre of reaction (CR). Reference ranges for normal motion were calculated from the analysis of FE radiographs of 30 asymptomatic volunteers. The accuracy and validity of the clinical examination procedures were then calculated, and reported as sensitivity, specificity, and likelihood ratios for a positive test (LR+) and a negative test (LR-).
Results: In patients with LBP, sagittal rotation LSR and sagittal translation LSR had a prevalence of approximately 5.7% (p <0.0005) in this cohort. Sagittal rotation LSI was not found in statistically significant numbers. Sagittal translation LSI was found at a prevalence of 3.6% (p <0.05). Abnormal TRR (23.3%), IAR (17.7%), and CR (16.5%) were more prevalent findings (all p <0.0005). Observation of the quantity of AROM, during FB, is not valid for the assessment of either total lumbar segmental sagittal rotation, or detection of individual segments with abnormal segmental motion. PPIVMs and PAIVMs are specific, but not sensitive, for the detection of rotation LSI and translation LSI. A positive test (grade 4 on a scale from 0 to 4) with BB PPIVMs may have some utility for the diagnosis of rotation LSI or translation LSI, with LR+ of 8.4 and 7.1 respectively (and 95% CIs from around 1.7 to 38). Likelihood ratio statistics for FB PPIVMs were not statistically significant. A positive test (grade 2 on a scale from 0 to 2) with PAIVMs may have some utility for the diagnosis of rotation LSI or translation LSI, with LR+ of 2.7 and 2.5 respectively (and 95% CIs from around 1.01 to 7.5). Neither PPIVMs nor PAIVMs were useful for the detection of LSR, or abnormal quality of motion as measured by TRR, CR, and IAR.
Conclusions: Abnormal spinal segmental motion is associated with the symptom of LBP, in patients presenting to physiotherapists with a new episode of recurrent or chronic LBP, however prevalence is low due to highly variable lumbar segmental motion among asymptomatic individuals. Manual physical examination has moderate validity, but limited utility on its own, for the detection of translation LSI. Further research should investigate the utility of other clinical examination findings for the detection of lumbar segmental mobility disorders.
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Dedering, Åsa. "Lumbar muscle fatigue : analysis of electromyography, endurance time and subjective factors in patients with lumbar disc herniation and healthy subjects /." Stockholm, 2002. http://diss.kib.ki.se/2002/91-7349-302-3.
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Torrie, Peter Alexander Gilmer. "Degenerative lumbar scoliosis : the role of neural arch asymmetry and lumbosacral transitional vertebrae." Thesis, University of Bristol, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.720844.
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Westfall, Carola Hammer 1953. "Bone mineral content of femur, lumbar vertebrae, and radius in eumenorrheic female athletes." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276757.
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This study compared bone mineral index (BMI, gm/cm²) of the femur, spine, and radius, measured by photon absorptiometry in various groups of eumenorrheic female athletes. The sample included body builders (11), swimmers (13), runners (5 collegiate, 11 recreational), and inactive controls (18) averaging 25 years of age, ranging from 17 to 38 years. Lumbar vertebral BMI for body builders (1.40 gm/cm²) was significantly (p ≤ 0.05) greater than controls (1.25 gm/cm²). The body builders' femoral neck BMI (1.09 gm/cm²) was significantly greater than swimmers (0.97 gm/cm², recreational runners and controls (0.95 gm/cm²). Years of exercise history and calcium consumption were not significant predictors of BMI. Correlation coefficients between fat-free body and all BMI sites were significant and more closely related to bone mineral than other variables (weight, height, weight/height²). Correlation coefficients for proximal and distal radius BMI and femoral and spine BMI were significant, the distal radius having higher association.
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Zufelt, Nephi A. "A kinematics-based testing protocol to study the mechanics of the human lumbar spine." View the abstract Download the full-text PDF version, 2008. http://etd.utmem.edu/ABSTRACTS/2008-038-Zufelt-index.htm.
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Thesis (M.S.)--University of Tennessee Health Science Center, 2008.Title from title page screen (viewed on March 31, 2009). Research advisor: Denis J. DiAngelo, Ph.D. Document formatted into pages (x, 101 p. : ill.). Vita. Abstract. Includes bibliographical references (p. 61-65).
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Tang, Wing-kit. "In vitro kinematics of the lumbar facet joints for the development of a facet fixator." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43572066.
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Jansson, Karl-Åke. "On lumbar spinal stenosis and disc herniation surgery /." Stockholm, 2005. http://diss.kib.ki.se/2005/91-7140-257-8/.
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Lynn, Jennifer. "Outcomes of early rehabilitation following lumbar microdiscectomy." University of Western Australia. School of Surgery and Pathology, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0187.
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[Truncated abstract] There have been few studies into the effects of rehabilitation following lumbar microdiscectomy and consequently little evidence of its effect, if any, on outcome. Most studies cited fall into one of two categories: research involving a spinal surgery procedure without rehabilitation, or research involving spinal surgery with a nonspecific generic 'rehabilitation' or 'physical therapy'. In an era of evidence based medicine the efficacy of specific rehabilitation protocols following defined lumbar spine surgical procedures needs to be established for surgeons, therapists and patients to have confidence that the rehabilitation is appropriate and effective. The study was proposed to investigate the outcome of a specific and novel rehabilitation protocol commenced immediately after lumbar microdiscectomy. Data collected from the research cohort were compared to data collected from a contrast group who underwent standard rehabilitation at a distant site. A retrospective study (Phase One) was carried out with a cohort of post-operative microdiscectomy patients between February 2000 and December 2002. The outcome of surgery followed by the rehabilitation protocol was assessed using validated outcome instruments. A contrast or control group was not included. After reviewing the data limitations with the design and implementation of the study were identified. A prospective study (Phase Two) was proposed and changes made in the principal outcome measure used, in the demographic data to be retrieved, the addition of pain scales, and in the exclusion of compensable patients. A contrast group was included for the prospective study. ... The study group commenced exercise and posture correction the day following surgery. There were restrictions placed on activity involving bending. The contrast group followed the advice of the surgeon in Queensland and attended rehabilitation at local physiotherapy facilities. Both groups were followed for 12 months using outcome instruments. Strict comparison between WA and QLD cohorts were limited due to sample size, however trends were observed. Data of the prospective study showed that there was greater reduction in back pain with the early rehabilitation protocol (P<.0001) compared to standard rehabilitation (P=.09), while there was no difference between groups in leg pain. There was a significant improvement in the level of functional disability between time-points for the WA cohort, and overall change from pre-operative RMQ measures to 12 months in both groups were statistically significant. The WA group was less reliant on pain medication and was more satisfied with the results of their surgery. The primary hypothesis of this study that there would be a difference in outcome following lumbar microdiscectomy in patients who receive early specific rehabilitation compared to those who receive standard rehabilitation at another centre, was supported in both primary and secondary outcome data. The key finding of this study was that commencing the early exercise protocol resulted in significantly less back pain over the 12 month time period of the study. Other major findings were that the WA cohort demonstrated significant improvement in function at all time-points and between all time-points except six to 12 months, took less pain medication and were more satisfied with the outcome of their surgery than the QLD cohort.
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Sasidhar, Vadapalli. "Stability imparted by a posterior lumbar interbody fusion cage following surgery : a biomechanical evaluation /." See Full Text at OhioLINK ETD Center (Requires Adobe Acrobat Reader for viewing), 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1092370385.
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Thesis (M.S.B.)--University of Toledo, 2004.Typescript. "A thesis [submitted] as partial fulfillment of the requirements of the Master of Science degree in Bioengineering." Bibliography: leaves 4-11.
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Ruchelsman, Michal (Michal Aliza). "The effect of Zoledronate treatment timing on lumbar and caudal vertebrae in ovariectomized rats." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40470.
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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2007.Includes bibliographical references (leaves 21-22).
Introduction: While there have been numerous studies demonstrating the effect of bisphosphonates in rats as either a preventative treatment or recovering treatment for osteoporosis, few have directly compared the two treatment alternatives with respect to their effects on bone microstructure and strength. This paper, then, investigates the effects of treatment timing using Zoledronate [ZOL], a potent bisphosphonate, on the lumbar and caudal vertebrae in ovariectomized [OVX], female Wistar rats. Methods: Twenty nine rats were divided into four groups according to their treatment: OVX at week 0 (n=5), OVX+earlyZOL (20 jig/kg s.c. week 0, n=8), OVX+late ZOL (20 jlg/kg s.c. week 8, n=7), and SHAM-OVX (n=9). Results: Micro-computed tomography (giCT) evaluation of six parameters characterizing bone morphology [BV/TV, ConnD, SMI, TbTh, TbNr, and TbSp] showed slightly favorable effects with early ZOL treatment in the fourth lumbar [L4] vertebrae. Compared to SHAM-OVX, OVX has a significantly (p<0.05) lower BV/TV, higher SMI, and TbSp. OVX+earlyZOL had a significantly higher BV/TV than OVX and SHAM-OVX and a lower TbSp than OVX.
(cont.) Decreasing trends but no statistically significant differences were reached in the cortical thickness with treatment, nor were there any differences in bone morphology between the groups in the sixth caudal vertebrae [CD6]. A two-way ANOVA revealed an interaction between the vertebral site and treatment group for BV/TV and TbSp. jCT and static compression tests on the L3 and L4 of rats in a secondary study revealed significant correlations in architectural parameters and biomechanical properties between the two vertebrae. L4 had a higher BV/TV, SMI, and minimum area [minA] and a lower TbNr and TbSp than L3, but L4 had lower values for stiffness, energy to failure [energy], and ultimate load. Regression analysis also showed statistically significant correlations between ultimate load [Uload] and total bone volume [BV], energy and BV, Uload and minA, stiffness and minA, and energy and minA. Conclusion: Results showed slightly favorable trends on bone microstructure for early treatment and demonstrated the potential for clinical advantages using preventative therapy. Upon further research in understanding the vertebrae's response to ZOL at different time points after OVX, treatment for osteoporosis may be better directed.
by Michal Ruchelsman.
S.B.
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Kelley, Susannah M. "Change in lumbar dysfunction in surgical patients and the effect of two exercise programs /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18562.pdf.
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Tang, Wing-kit, and 鄧穎傑. "In vitro kinematics of the lumbar facet joints for the development of a facet fixator." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43572066.
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Engstrom, Craig. "Lesions of the pars interarticularis in the lumbar spine of cricket fast bowlers /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18516.pdf.
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Pfeiffer, Ferris M. "Patient specific bone remodeling and finite element analysis of the lumbar spine." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/6022.
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Thesis (Ph. D.)--University of Missouri-Columbia, 2007.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on October 16, 2007) Vita. Includes bibliographical references.
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Pinto, Deborrah C. "Variability in the Spine: A Histomorphometric Analysis of Spinous Processes from the Posterior Vertebral Arch." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1238092506.
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Lundin, Anders. "Corticosteroids in Lumbar Disc Surgery." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6126.
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Oura, P. (Petteri). "Search for lifetime determinants of midlife vertebral size:emphasis on lifetime physical activity and early-life physical growth." Doctoral thesis, Oulun yliopisto, 2017. http://urn.fi/urn:isbn:9789526215792.
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Abstract Osteoporotic vertebral fractures are common among ageing populations worldwide. Although small vertebral size has been established as an independent risk factor for vertebral fracturing, relatively few determinants of vertebral size are currently known. The present study aimed to reveal lifetime factors that associate with midlife vertebral size. Overall physical activity across the lifespan, sports participation in adulthood, occupational physical activities in adulthood, and physical growth in early life were investigated. A subsample of the Northern Finland Birth Cohort Study 1966 was used, with a 46-year follow-up (n = 1,540). Vertebral dimensions were obtained by magnetic resonance imaging of the lumbar spine at the age of 46. The present data showed that high lifelong leisure-time physical activity and active participation in high-impact sports in adulthood were associated with large midlife vertebral size among women, but no such association was detected among men. Occupational physical activities were not associated with vertebral size among either sex. Early-life weight gain predicted large midlife vertebrae among both sexes, and the effect of height gain on vertebral size seemed to be mediated by adult height. The present findings show that the female vertebra in particular seems to benefit from high leisure-time physical activity and active participation in high-impact sports. Regardless of sex, early development also seems to play a role in determining later-life vertebral size. Prospective studies should confirm the causality of the present findings, and further research is needed to shed light on other lifetime factors as determinants of vertebral sizeTiivistelmä Selkänikaman osteoporoottiset murtumat ovat maailmanlaajuisesti yleinen ikääntyvän väestön vaiva. Pienen nikamakoon tiedetään lisäävän nikamamurtuman riskiä, mutta nikamakokoon vaikuttavia tekijöitä tunnetaan toistaiseksi varsin vähän. Tämän tutkimuksen tavoitteena on selvittää keski-iän nikamakokoon vaikuttavia elinaikaisia tekijöitä. Erityisesti tutkitaan vapaa-ajan liikunnallisuuden, lajikohtaisen harrastusaktiivisuuden, työn liikunnallisten piirteiden sekä lapsuuden ja nuoruuden fyysisen kehityksen yhteyttä nikamakokoon. Tutkimusjoukkona käytetään osaotosta Pohjois-Suomen vuoden 1966 syntymäkohortista (n = 1 540). Seuranta-aika on ollut 46 vuotta, ja selkänikaman koko on määritetty tutkittavista 46 vuoden iässä otetuista lannerangan magneettikuvista. Tutkimusaineistossa naisten elinaikainen vapaa-ajan liikunnallisuus sekä aktiivinen luustoa kuormittavien liikuntalajien harrastaminen ovat yhteydessä suureen nikamakokoon keski-iässä. Miesten liikunnallisuuden ja nikamakoon välillä ei sen sijaan havaittu vastaavaa yhteyttä, eivätkä työn liikunnalliset piirteet olleet yhteydessä nikamakokoon kummallakaan sukupuolella. Varhainen painon kasvu ennusti suurta keski-iän nikamakokoa sukupuolesta riippumatta, ja varhaisen pituuskasvun vaikutus nikamakokoon näytti välittyvän aikuispituuden kautta. Tutkimuksen tulosten perusteella siis erityisesti naiset näyttäisivät hyötyvän vapaa-ajan liikunnallisesta aktiivisuudesta ja luuta kuormittavien lajien harrastamisesta aikuisiällä. Sukupuolesta riippumatta myös lapsuuden ja nuoruuden fyysisellä kehityksellä näyttäisi olevan merkitystä keski-iän nikamakokoon. Tulevaisuudessa prospektiivisten tutkimusasetelmien tulisi vahvistaa tässä tutkimuksessa havaittujen yhteyksien kausaliteetti. Lisäksi tutkimusta tarvittaisiin jatkossa muiden nikamakokoon vaikuttavien elinaikaisten tekijöiden selvittämiseksi
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Seenivasan, Gopi. "Application of adaptive bone remodelling theory to the motion segments of lumbar spine: a theoretical study." Thesis, University of Iowa, 1993. https://ir.uiowa.edu/etd/5699.
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Leung, Hon-bong. "Consequence of paraspinal muscle after posterior lumbar spinal fusion the histology and electromyography findings in a rabbit model /." Click to view the E-thesis via HKUTO, 2003. http://sunzi.lib.hku.hk/hkuto/record/B31971179.
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Campbell-Kyureghyan, Naira Helen. "Computational analysis of the time-dependent biomechanical behavior of the lumbar spine." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1095445065.
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Thesis (Ph. D.)--Ohio State University, 2004.Title from first page of PDF file. Document formatted into pages; contains xix, 254 p.; also includes graphics. Includes bibliographical references (p. 234-254).
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Parepalli, Bharath K. "Biomechanical Evaluation of Posterior Dynamic Stabilization Systems in Lumbar Spine." Connect to full text in OhioLINK ETD Center, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1262205380.
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Thesis (M.S.)--University of Toledo, 2009.Typescript. "Submitted as partial fulfillment of the requirements for the Master of Science Degree in Mechanical Engineering." "A thesis entitled"--at head of title. Bibliography: leaves 92-98.
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Whitmarsh, Tristan. "3D reconstruction of the proximal femur and lumbar vertebrae from dual-energy x-ray absorptiometry for osteoporotic risk assessment." Doctoral thesis, Universitat Pompeu Fabra, 2012. http://hdl.handle.net/10803/94492.
Full textAbstract:
In this thesis a method was developed to reconstruct both the 3D shape and the BMD distribution of bone structures from Dual-energy X-ray Absorptiometry (DXA) images. The method incorporates a statistical model built from a large dataset of Quantitative Computed Tomography (QCT) scans together with a 3D-2D intensity based registration process.
The method was evaluated for its ability to reconstruct the proximal femur from a single DXA image. The resulting parameters of the reconstructions were subsequently evaluated for their hip fracture discrimination ability. The reconstruction method was finally extended to the reconstruction of the lumbar vertebrae from anteroposterior and lateral DXA, thereby incorporating a multi-object and multi-view approach.
These techniques can potentially improve the fracture risk estimation accuracy over current clinical practice.En esta tesis se desarrolló un método para reconstruir tanto la forma 3D de estructuras óseas como la distribución de la DMO a partir de una sola imagen de DXA. El método incorpora un modelo estadístico construido a partir de una gran base de datos de QCT junto con una técnica de registro 3D-2D basada en intensidades. Se ha evaluado la capacidad del método para reconstruir la parte proximal del fémur a partir de una imagen DXA. Los parámetros resultantes de las reconstrucciones fueron evaluados posteriormente por su capacidad en discriminar una fractura de cadera. Por fin, se extendió el método a la reconstrucción de las vértebras lumbares a partir de DXA anteroposterior y lateral incorporando así un enfoque multi-objeto y multi-vista. Estos técnicas pueden potencialmente mejorar la precisión en la estimación del riesgo de fractura respecto a la estimación que ofrece la práctica clínica actual.
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Huang, Yuyun. "Wu shi Zhong yi shou fa zhi liao yao tong de lin chuang yan jiu /." click here to view the abstract and table of contents, 2006. http://net3.hkbu.edu.hk/~libres/cgi-bin/thesisab.pl?pdf=b20009495a.pdf.
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梁漢邦 and Hon-bong Leung. "Consequence of paraspinal muscle after posterior lumbar spinal fusion: the histology and electromyography findingsin a rabbit model." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B31971179.
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Pasqualini, Wagner 1960. "Estenose degenerativa do canal lombar = correlação entre o índice de Oswestry e imagem de ressonância magnética = Degenerative lumbar spinal stenosis: correlation with Oswestry index and magnetic ressonance." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/309804.
Full textAbstract:
Orientador: João Batista de MirandaTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas
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Resumo: Modelo de Estudo: Estudo diagnóstico Transversal de caso controle. Objetivos: comparar pacientes com estenose do canal lombar com indicação de cirurgia e um grupo controle, assintomáticos para esta doença, levando em consideração imagens de ressonância magnética (RM) e o questionário de Oswestry. Material e Método: Vinte e três pacientes com estenose do canal lombar foram comparados com um grupo controle de 17 indivíduos. Todos foram submetidos a RM e responderam ao questionário de Oswestry. Medidas qualitativas foram descritas segundo os grupos com uso de frequências absolutas e relativas e, verificada a existência de associação dessas medidas com uso do teste exato de Fisher. Medidas quantitativas foram descritas e comparadas entre os grupos com uso do teste Mann-Whitney. O teste de Spearman foi utilizado para avaliar a correlação entre os grupos. Resultados: Lombalgia foi a queixa mais frequente nos dois grupos. O índice de Oswestry mostrou média de percentual de invalidez de 45,69% no Grupo Estenose e 11,60% no Grupo Controle. A RM mostrou que a área de secção transversa do saco dural, o diâmetro do canal e a avaliação dos forames e recesso lateral estavam alterados em ambos os grupos. Conclusões: Não houve relação entre o grau de estenose do canal lombar mensurado em exame de RM com o índice de Oswestry em ambos os grupos
Abstract: Study design: Transversal Case-control, diagnostic study. Objectives: To verify the relationship between the degree of lumbar spinal canal stenosis (LCS), as seen in magnetic resonance imaging (MRI), and the severity of disability as seen in the Oswestry Index, in patients with LCS compared to controls without a diagnosed LCS. Methods: Twenty-three patients with a previous diagnosis of LCS were compared with a control group of 17 volunteers. All participants underwent MRI and answered the Oswestry questionnaire. Qualitative data were described according to the groups with the use of absolute and relative frequencies, and the association of these measures was checked by using the Fisher exact test. Quantitative measures were described and compared between groups using the Mann-Whitney test. Spearman's test was used as well. Results: Low back pain was the most frequent complaint in both groups. The Oswestry index showed average percentage of disability of 45.69% in patients with stenosis and 11.60% in the control group. MRI revealed that the dural sac cross-sectional area (DCSA), the diameter of the canal and the evaluation of lateral recesses and foramina were equally changed in both groups. Conclusions: There was no correlation between the degree of lumbar canal stenosis measured on MRI with the Oswestry Disability Index in both groups
Doutorado
Cirurgia
Doutor em Cirurgia
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Cavali, Paulo Tadeu Maia 1965. "Estenose do canal lombar = relação do equilíbrio sagital com a avaliação clínica = Lumbar canal stenosis: relationship with the sagittal balance and the clinical evaluation." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/309803.
Full textAbstract:
Orientador: João Batista de MirandaTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas
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Resumo: Existe uma grande variabilidade de resultados nos estudos prévios que analisam os parâmetros do alinhamento sagital (PAS) em indivíduos normais e em pacientes com doenças degenerativas da coluna lombar. A maioria desses estudos relacionam os PAS somente com o sintoma de dor lombar crônica, em grupos de pacientes com diferentes doenças degenerativas lombares, o que dificulta a aplicação clínica desses dados tanto na avaliação diagnóstica como na indicação terapêutica. O objetivo deste estudo caso-controle foi analisar as relações dos PAS com os diferentes sintomas entre um grupo de pacientes com diagnóstico de estenose lombar e um grupo controle e as mesmas relações entre os subgrupos de pacientes diferenciados por sintoma. Foram colhidos os dados da história, exame clínico, ressonância magnética e de exames radiográficos de 23 pacientes com estenose lombar (denominado grupo estenose) e de 17 indivíduos saudáveis (denominado grupo controle). Os PAS utilizados foram: cifose torácica (CT), lordose lombar (LL), eixo sagital vertical (C7-T1), listese anteroposterior (OAP), lordose lombo-pélvica total (LLT) e regional (LLR), eixo sagital em T1, T4 eT9 (ES1, ES4 e ES9 respectivamente), inclinação sagital T1-L5 (IST1-L5), "offset sagital" T1 e T9 (OST1 e OST9), "tilt pélvico" (TP), "slope sacral" (SS), morfologia pélvica (MP), ângulo sacro-femoral (ASF), distância sacro-femoral (DSF) e "overhang" (OVHG). Na Fase 1 do estudo, os dados do PAS foram correlacionados entre os indivíduos do grupo controle e grupo estenose e, na Fase 2, entre os subgrupos do grupo estenose diferenciados por sintomas como lombalgia, radiculopatia, claudicação neurogênica e dor, medida pela Escala Analógica de Dor (EAD). Na Fase 1, observou-se que os pacientes do Grupo Estenose (GE) como um todo tiveram menores valores de LLT (p = 0,006) e LLR em L1, L2 e L3 (p = 0,026) e os pacientes do GE com sintoma de radiculopatia, além dos dados acima, tiveram aumento do TP (p = 0,004), quando comparados ao Grupo Controle (GC). Na Fase 2, o Subgrupo Lombalgia obteve maiores valores de CT (p = 0,035) e LLR (p = 0,028) e uma diminuição do TP (p = 0,029), OST1 (p = 0,022), DSF (p = 0,014) e OVHG (p = 0,035) em relação aos outros pacientes do GE que não se queixavam de lombalgia e, no Subgrupo Radiculopatia, houve a diminuição da LLR (p < 0,047). Este estudo demonstra que há correlações significativas dos sintomas e dos PAS entre o GE e o GC e também entre os Subgrupos do GE diferenciados por sintomas. Estes dados indicam uma melhor interpretação clínica dos PAS, assim como podem sugerir a terapêutica mais adequada
Abstract: There is a great variation in the results of previous studies analyzing sagital alignment parameters (SAP) in normal individuals and in patients with degenerative diseases of the lumbar spine. Most studies associate SAP only with chronic lumbar pain, in groups of patients with different lumbar degenerative diseases, which makes it difficult to apply these data clinically both in diagnostic evaluation and in therapeutics. The objective of this prospective, diagnostic case-control study was to examine the relationship between sagittal balance parameters and different symptoms of spine disease in patients with lumbar canal stenosis (LCS) and controls and the same associations between subgroups of patients with different symptoms. We collected clinical history, clinical exam data from 23 patients with spinal stenosis and 17 healthy volunteers (controls). Magnetic resonance imaging (MRI) and x-rays allowed the measurement of sagittal axis parameters. The SAP analyzed were thoracic kyphosis, lumbar lordosis, sagittal axis, anterior-posterior listesis, total and regional lumbar-pelvic lordosis, sagittal axis in T1, T4 and T9, pelvic tilt, sacral slope, pelvic morphology, sacro-femoral angle, sacro-femoral distance and overhang. In the first phase of the study, SAP data were correlated between controls and patients, and in the second phase, the subgroups inside the group of patients with stenosis were compared for symptoms as lumbar pain, radiculopathy, neurogenic claudication and pain, measure by the visual analogue scale (VAS). In the first phase, it was observed that the stenosis patients presented lower values of total lumbopelvic lordosis (p = 0.006) and regional lordosis L1, L2 and L3 (p < 0.026). Those with stenosis and radiculopathy also had higher values of pelvic tilt (p = 0.004) and lower values for total lumbopelvic lordosis and regional lordosis in L1 and L2 (p < 0.05) than controls. All patients complaining of back pain had higher values of thoracic kyphosis (p = 0.035), regional lumbopelvic lordosis in L1 (p = 0.028), lower values for pelvic tilt (p = 0.029), sagittal T1 offset (p = 0.022), sacro-femoral distance (p = 0.014) and overhang (p = 0.035) compared to patients without the complaint. Patients with stenosis and radiculopathy were less prone to have regional lordosis in L2, L3 and L4 (p = 0.047, p = 0.047 and p = 0.023 respectively). In conclusion, this study shows that there are significant correlations between symptoms and sagittal axis parameters between patients with and without spinal canal stenosis and also in subgroups of the patients with stenosis with different complaints.These data indicate a better clinical interpretation of SAP, as well as suggest a better therapeutic approach
Doutorado
Cirurgia
Doutor em Cirurgia
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Consciência, José Alberto de Castro Guimarães. "Estabilização dinâmica em patologia degenerativa da coluna lombar: estado da arte e contributo pessoal." Doctoral thesis, Faculdade de Ciências Médicas. Universidade Nova de Lisboa, 2007. http://hdl.handle.net/10362/5204.
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Resumo
Este trabalho encontra-se dividido em três capítulos distintos. No primeiro, é caracterizada a doença degenerativa lombar, demorando-se o autor na descrição pormenorizada das alterações anatómicas,
biomecânicas, e bioquímicas inerentes à sua ocorrência. Segue-se a descrição da evolução das diferentes formas de terapêutica, enumerando as que de forma clássica mais frequentemente são utilizadas (cirúrgicas e não cirúrgicas).
No segundo capítulo, são referidos os mais recentes avanços tecnológicos nesta área, mencionando, nas suas vertentes biomecânicas,
clínicas e terapêuticas, as particularidades das estabilizações dinâmicas interespinhosas e pediculares, bem como da artroplastia de disco. Após esta longa introdução, inicia-se o terceiro capítulo no qual se apresenta um estudo prospectivo da avaliação clínica, funcional, imagiológica e da variação da densidade mineral óssea vertebral em 20
doentes com patologia degenerativa, tratados com sistemas de estabilização dinâmica semi-rígida interespinhosa, e seguidos durante dois anos. Do estudo realizado conclui-se que os sistemas referidos são eficazes clínica e funcionalmente no tratamento de doentes com doença degenerativa lombar. Mais ainda, estes instrumentais proporcionam um aumento da altura do disco confirmado na incidência radiográfica de perfil no nível instrumentado.
Constatámos ainda que a densidade mineral óssea vertebral dos doentes intervencionados, avaliada com sistema DXA, não demonstra diferenças com significância estatística ao longo do tempo, omparativamente à determinada em idêntica população mas sem qualquer patologia lombar. Acresce que se obteve uma correlação entre a
funcionalidade física e a BMD radial, com significância estatística crescente
nas duas medições realizadas.
Abstract
This study is divided in three different chapters. In the first one the author describes the anatomical, biomechanical and biochemical changes that go along with degenerative lumbar spine disease. The therapeutically possibilities are mentioned, mainly with the classic fusion and decompression as well as the non surgical options.
Then, in the second chapter, the author describes, from the biomechanical, clinical and therapeutically point of view, the new techniques of dynamic stabilization, interspinous and pedicular systems, as well as disc replacement.
After this introduction, in the third chapter a prospective clinical, functional, imagiologic and vertebral bone mineral density variation study is presented. Twenty patients with degenerative lumbar spine disease are selected, and operated with a semi rigid interspinous system device, and followed for a two year period.
The author concludes that the interspinous semi rigid systems were clinically and functionally effective in lumbar degenerative patients. It was also founded that the disc height at the implant segment level increased after surgery.
Bone density was assessed with a DXA system device. As far as vertebral bone density is concerned, the author found no differences what so ever inside the group during the study, or to an identical control group without any lumbar pathology.
The correlation study between the BMD and physical function showed that there was only significant statistically data in radial BMD measurement, and this happened with growing correlation from year 2006 to 2007.
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黃玉雲. "吳氏中醫手法治療腰痛的臨床研究." HKBU Institutional Repository, 2006. http://repository.hkbu.edu.hk/etd_ra/760.
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陳永德. "腰椎間盤突出症手法治療規律的文獻研究." HKBU Institutional Repository, 2009. http://repository.hkbu.edu.hk/etd_ra/1028.
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Wang, Peiqiu. "Yao tui tong zhi ya yu zhen ci "a shi xue" lin chuang zhi liao bi jiao yan jiu /." click here to view the abstract and table of contents, 2006. http://net3.hkbu.edu.hk/~libres/cgi-bin/thesisab.pl?pdf=b20009392a.pdf.
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Souza, Tharlianne Alici Martins de. "Origens, distribuições e ramificações dos nervos femorais no tamanduá bandeira (Myrmecophaga tridactyla Linnaeus, 1758)." Universidade Federal de Uberlândia, 2012. https://repositorio.ufu.br/handle/123456789/13054.
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The study of the lumbosacral plexus nerves constituents is extremely important because it relates the various evolutionary aspects of animal locomotion and posture. Considering that the femoral nerve is the largest cranial part of the lumbosacral plexus, aimed to describe the origins, distributions and ramifications of the femoral nerve in giant anteater (Myrmecophaga tridactyla), comparing with the literature described for domestic and wild animals in to establish correlations of morphological similarities and providing subsidies for similar areas. For the work three specimens were used prepared by injection of aqueous 10% formaldehyde in the femoral artery, for keeping the specimens and further dissection. The origin of the femoral nerve in the right and left sides, is the ventral brach of the lumbar spinal nerves one, two and three. As to the distributions and ramifications, the femoral nerve provides branches to the major and minor psoas muscle, lateral and medial iliac, pectineus, adductor magnus, sartorius and quadriceps. The anatomical origin of the femoral nerve in M. tridactyla shows a variation due to the difference in the number of vertebrae (L1, L2 and L3). But in most distributions and ramifications of the femoral nerve, this species has a significant degree of morphological similarities with domestic and wild animals in this study.O estudo dos nervos constituintes do plexo lombossacral é de extrema importância, pois relaciona os diversos aspectos evolutivos de postura e locomoção dos animais. Considerando-se que o nervo femoral é o maior da parte cranial do plexo lombossacral, objetivou-se descrever as origens, distribuições e ramificações dos nervos femorais no Tamanduá bandeira (Myrmecophaga tridactyla), comparando com a literatura descrita para animais domésticos e silvestres, de modo a estabelecer correlações de similaridades morfológicas e fornecer subsídios para as áreas afins. Foram utilizadas três espécimes, preparadas através da injeção de solução aquosa de formaldeído a 10% via artéria femoral, para a conservação e posterior dissecação das mesmas. As origens nos antímeros direito e esquerdo, ocorreram dos ramos ventrais dos nervos espinhais lombares um, dois e três. As distribuições e ramificações foram observadas para os músculos psoas maior e menor, ilíacos lateral e medial, pectíneo, adutor magno, sartório e quadríceps femoral. Com base nas origens dos nervos femorais do M. tridactyla, uma reconfiguração foi observada devido à variação no número de vértebras lombares (L1, L2 e L3). Entretanto, uma similaridade morfológica parcial foi mantida quanto às distribuições e ramificações, quando comparadas aos animais domésticos e silvestres considerados neste estudo.
Mestre em Ciências Veterinárias
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王沛球. "腰腿痛指壓與針刺「阿是穴」臨床治療比較研究." HKBU Institutional Repository, 2006. http://repository.hkbu.edu.hk/etd_ra/758.
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Hetherington, Jorden Hicklin. "Automated lumbar vertebral level identification using ultrasound." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62945.
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Papp, Tibor. "The growth of the lumbar vertebral canal." Thesis, University of Aberdeen, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262929.
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The aim of the study was to examine the growth and the shape of the lumbar vertebral canal throughout life. A unique collection in the Natural History Museum, London provided many infant spines along with adult ones in perfect condition. Unmagnified silhouette photographs were taken of the vertebrae and the size of the canals was measured by a computer. It was found that in midsagittal diameter and cross-sectional area the vertebral canal was fully matured by 1 year of age at L1-L4 and by 6 at L5. The midsagittal dimension was larger in many infant spines that in the adult. The interpedicular diameter grew at L1 until 10 years of age, at L2-L5 until adulthood while the perimeter did not change at the cranial 3 vertebrae, however, grew at the caudal levels until 16 years of age. The shape of the vertebral canal showed changes at the cranial four levels until adulthood as regards the trefoil configuration, the circularity and the situation of the centroid. At L5 circularity increased throughout life showing degenerative changes by increasing age. Trefoil configuration appeared in adulthood at L5 and its degree as well as its incidence did not change throughout life and generally was not associated with degenerative changes. In the second study anthropometric measurements of head circumference, clavicle length and lower limb lengths were compared to vertebral canal size taken from CT scans. The midsagittal diameter of the canal did not correlate with the other bone measurements, however, the interpedicular diameter showed a relationship. This dimension has significant growth potential like the clavicles and the long bones and to a less extent the skull. This also shows that the neural contents probably exert an effect on the growth of the canal. In the third study MRI measurements of adult lumbar canals were compared to the obstetric data of the subjects to investigate whether on adverse ante-natal environment can cause a disturbance in canal growth, thus, a small canal.
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Apperley, Scott. "Differential functioning of deep and superficial lumbar multifidus fibres during vertebral indentation perturbations." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2856.
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Introduction: Lumbar spine stability programs have been advocated to prevent and
rehabilitate low back injury. Specifically, abdominal ‘drawing in’ has been used to train
motor control deficits in individuals with low back pain. This technique requires
differential activity within deep and superficial lumbar multifidus fibres, yet the ability of
these fibres to act differentially has not been extensively examined. Deep fibres are
hypothesized to act as spinal stabilizers while superficial fibres are hypothesized to act as
global movers of the trunk.
Objective: To investigate differential excitation of deep and superficial lumbar multifidus
fibres during segmental indentation loads to the lumbar spine.
Methods: Posterior-anterior indentation loads were applied to individual lumbar spinous
processes of prone participants at three different velocities and three different indentation
displacements. Indentations consisted of an initial downward displacement that was
subsequently held for 500 milliseconds. Intramuscular electromyography (EMG) of deep
and superficial lumbar multifidus fibres at L3, L4 and L5 was recorded. EMG was
quantified by “average” root mean square (RMS), peak RMS of a sliding RMS window
and time-to-peak RMS over the indentation phase and 500 millisecond hold phase.
Results: Increased indentation displacement at the slowest velocity resulted in increased
“average” RMS of only the L5 superficial multifidus fibres. Increased indentation
velocity produced differential effects in deep and superficial multifidus fibres. “Average”
RMS and peak RIVIS significantly increased with increasing indentation velocity in most
deep fibre recording sites, yet superficial fibre excitation did not significantly increase. In
most EMG recording sites, the time-to-peak RMS increased with increasing indentation
displacement and decreased with increasing indentation velocity.
Conclusion: Differential excitation of superficial and deep multifidus fibres was found
with increasing indentation velocity; however, the result was opposite to that
hypothesized. This result is clinically relevant because it suggests deep multifidus fibre
excitation may increase in response to increased perturbation magnitude, possibly to
restore vertebral body position. Differential excitation effects may also be related to
different mechanical stimuli experienced by deep and superficial fibres due to vertebral
body movement during indentation loads.
11
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Condax, Peter. "Finite element analyses of pathological changes in the lumbar vertebral body." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/13961.
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Elvis, Mahmutović. "Uticaj medicinske rehabilitacije na kvalitet života operativno i neoperativno lečenih pacijenata sa lumbalnom radikulopatijom." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2018. https://www.cris.uns.ac.rs/record.jsf?recordId=105513&source=NDLTD&language=en.
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Uvod: Sindrom lumbalne radikulopatije obuhvata disfunkciju nervnog korena lumbalne kičme, prouzrokovano kompresijom, nastalom usled hernijacije (protruzije, prolapsa) intervertebralnog diska ili zbog inflamatornih i degenerativnih promena (najčešće osteofita) u foraminalnom otvoru. Kvalitet života predstavlja savremeni koncept posmatranja ishoda oboljenja i uspešnosti terapijske procedure kako u svim oblastima medicine, tako i u problematici lumbalne radikulopatije.Cilj: Proceniti kvalitet života operativno i neoperativno lečenih pacijenata sa lumbalnom radikulopatijom na početku lečenja i 3 meseca, odnosno 6 meseci nakon sprovedene medicinske rehabilitacije.Metode: Istraživanje predstavlja prospektivnu kliničku studiju kojom je analiziran kvalitet života bolesnika sa lumbalnom radikulopatijom. Obuhvaćen je randomiziran i stratifikovan uzorak pacijenata sa lumbalnom radikulopatijom diskalne geneze starosti 20 do 65 godina, oba pola (n=100), lečenih u Specijalnoj bolnici za progresivne mišićne i neuromišićne bolesti Novi Pazar. Jedna grupa ispitanika (n=50) lečena je isključivo neoperativnim metodama, dok je druga grupa bolesnika (n=50) lečena hirurškim i neoperativnim metodama. Kod svih pacijenata sproveden je konzervativni tretman primenom fizikalnih procedura, kineziterapijskih procedura, ergonomske edukacije. Medikamentna terapija je kod svih bila identična. Za procenu stanja pacijenata, kvaliteta života i efekta rehabilitacionog tretmana korišćena su dva standardizovana upitnika: opšti zdravstveni upitnik Medical Outcomes Study Short Form 36 (SF 36) i upitnik specifičan za oboljenje The Oswestry Disability Index (ODI).Rezultati: Vrednosti SF-36 upitnika prikazanih sumarnim fizičkim (SFS) i mentalnim (SMS) skorom, i kod neoperativno lečenih ispitanika (FSFS=450,221 i p<0,001; FSMS=106,543 i p<0,001), ali i kod operativno lečenih (FSFS=490,721 i p<0,001; FSMS=72,055 i p<0,001) značajno su se menjale u toku ispitivanja. Vrednosti SFS kod neoperativno lečenih pacijenata (početak tretmana, 3 meseca, 6 meseci): 35,5 / 44,7 / 50,8; kod operativno lečenih: 28,8 / 42,8 / 49,2. Vrednosti SMS kod neoperativno lečenih pacijenata: 40,6 / 44,8 / 52,6; kod operativno lečenih: 37,8 / 45,2 / 52,5.Najveće poboljšanje SFS, kod obe grupe pacijenata, je registrovano u prva tri meseca od početka rehabilitacionog tretmana, dok je najveći napredak SMS registrovan u prva tri meseca od početka rehabilitacionog tretmana kod druge grupe pacijenata.Vrednosti skora Osvestri indeksa nesposobnosti (ODI), i kod pacijenata prve grupe (F=432,810 i p<0,001), ali i kod pacijenata druge grupe (F=1341,180 i p<0,001) značajno su se menjale u toku ispitivanja. Vrednosti ODI kod neoperativno lečenih pacijenata su: 51,5% / 36% / 22,5%; a kod pacijenata druge grupe: 56,1% / 38,9% / 23,7%. Najveće poboljšanje je registrovano u prva tri meseca od početka rehabilitacionog tretmana kod druge grupe pacijenata. Postoje statistički značajne korelacije glavnih sumarnih skorova i domena SF-36 (SFS i SMS) i ODI skorova.Zaključak: Kvalitet života i funkcionalni status i neoperativno i operativno lečenih pacijenata je značajno bolji u komparaciji stanja, na 3 meseca i na 6 meseci u odnosu na početak rehabilitacije, kao i na 6 meseci u odnosu na stanje na 3 meseca.Introduction: The syndrome of lumbar radiculopathy involves dysfunction of nerve roots of the lumbar spine, caused by compression, resulting due to herniation (protrusion, prolapse) intervertebral disc, or due to inflammatory and degenerative changes (usually osteophytes) in foraminal opening. Quality of life is the modern concept of observing the outcome of disease and therapeutic procedures in performance in all areas of medicine, as well as the problems of lumbar radiculopathy.Aim: Assess the quality of life for surgically and conservatively treated patients with lumbar radiculopathy at initiation of treatment and 3 months, and 6 months after conducting medical rehabilitation.Methods: The study is a prospective clinical study, which analyzed the quality of life of patients with lumbar radiculopathy. Also included is randomized and stratified sample of patients with lumbar radiculopathy of discal genesis aged 20 to 65 years, of both sexes (n=100) treated at the Special Hospital for progressive muscular and neuromuscular diseases Novi Pazar. One group of patients (n=50) were treated exclusively non-surgical methods, while the second group of patients (n=50) treated with surgical and non-surgical methods. In all patients was conducted by applying the conservative treatment of physical procedures, kinesitherapy procedures, ergonomic education. Medication treatment is at all were identical. To assess the condition of patients, quality of life and the effect of rehabilitation treatment used two standardized questionnaires: a general health questionnaire Medical Outcomes Study Short Form 36 (SF 36) and disease-specific questionnaire The Oswestry Disability Index (ODI).Results: Values SF-36 questionnaire presented summary physical (SFS) and mental (SMS) scores, with non-surgical treated subjects (FSFS=450.221, p<0.001; FSMS=106.543, p<0.001), but also at surgical treated (FSFS=490.721, p<0.001; FSMS=72.055, p<0.001) were significantly changed during the study. Values at SFS non-surgical treated patients (beginning of treatment, 3 months, 6 months): 35.5 / 44.7 / 50.8; at surgical treated: 28.8 / 42.8 / 49.2. Values SMS with the non-surgical treated patients: 40.6 / 44.8 / 52.6; with surgical treated: 37.8 / 45.2 / 52.5. The biggest improvement of SFS, in both groups of patients were registered in the first three months of the start of the rehabilitation treatment, while the biggest progress SMS is registered in the first three months of the start of treatment in other patient groups. The Oswestry Disability Index (ODI) values score, in patients of the first group (F=432.810, p<0.001), and in second group of patients (F=1341.180, p<0.001) were significantly changed during the study. ODI values at non-surgical treated patients were: 51.5% / 36% / 22.5%; the second group of patients: 56.1% / 38.9% / 23.7%. The bigest improvement was registered in the first three months of the start of treatment in second group patients. There are statistically significant correlations main summary scores and SF-36 domains (SFS and SMS) and ODI scores.Conclusion: The quality of life and functional status of both groups patients was significantly better in comparison to the situation, at 3 months and 6 months compared to the beginning of rehabilitation, as well as at 6 months compared to 3 months.