Academic literature on the topic 'Patellar tendon bearing'
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Journal articles on the topic "Patellar tendon bearing"
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Demirbüken, İlkşan, Seher Özyürek, and Salih Angın. "The immediate effect of patellar tendon strap on weight-bearing asymmetry during squatting in patients with unilateral knee osteoarthritis: A pilot study." Prosthetics and Orthotics International 40, no. 6 (July 10, 2016): 682–88. http://dx.doi.org/10.1177/0309364615612251.
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Background: Knee osteoarthritis has commonly been associated with a symptom of pain resulting in an inter-limb weight-bearing asymmetry during functional tasks. Patellar tendon strap is one of the non-pharmacologic interventions to alleviate knee pain. Objectives: To investigate the immediate effect of a patellar tendon strap on weight-bearing asymmetry during squatting in people with unilateral knee osteoarthritis. Study design: Cross-sectional study. Methods: Ten patients with unilateral knee osteoarthritis and 10 healthy subjects were included in the study. Weight-bearing asymmetry of patients was assessed using a weight-bearing squat test during squatting at 30° and 60° both with and without patellar tendon strap. Pain intensity was assessed during squatting in unstrapped and strapped conditions with Visual Analog Scale. Results: The decrease in weight-bearing asymmetry values immediately after wearing patellar tendon strap during 30° ( p = 0.006) and 60° ( p = 0.011) of squatting tests was significantly higher in knee osteoarthritis patients than in healthy subjects. Reported pain intensity was similar in unstrapped and strapped conditions ( p = 0.066). Conclusion: The results of this study showed improved inter-limb weight-bearing symmetry during squatting. Further research with larger sample sizes investigating the effect of patellar tendon strap on weight-bearing asymmetry during functional activities in people with knee osteoarthritis is warranted. Clinical relevance Patellar tendon straps (easily fit and cheap unlike knee braces) had more improvements in inter-limb weight-bearing symmetry during squatting in people with knee osteoarthritis compared to healthy subjects. This study is a new insight for future studies to investigate clinical benefits of wearing patellar tendon straps in this population.
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Alimerzaloo, Farnaz, Reza V. Kashani, Hassan Saeedi, Marjan Farzi, and Nader Fallahian. "Patellar tendon bearing brace: Combined effect of heel clearance and ankle status on foot plantar pressure." Prosthetics and Orthotics International 38, no. 1 (May 20, 2013): 34–38. http://dx.doi.org/10.1177/0309364613486916.
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Background: Heel clearance and ankle status (free or locked) are of major determinants affecting peak plantar pressures and contact area in patellar tendon bearing brace and have been separately studied by many researchers. This study investigated the combined effect of ankle status and heel clearance on contact area and peak plantar pressure in different areas of foot (hindfoot, midfoot, and forefoot). Study design: Before–after repeated measurement trial. Methods: Nine healthy male volunteers walked 8 m with normal shoe and four conditions of patellar tendon bearing brace wear. Repeated-measure analysis of variance test was used to compare contact area and plantar pressure changes in three areas of the foot. Results: Application of patellar tendon bearing brace significantly reduced overall plantar pressure and contact area ( p < 0.01). Although both contact area and plantar pressure significantly decreased in hindfoot and midfoot, plantar pressure increased in forefoot area ( p < 0.05). Conclusions: Application of the patellar tendon bearing brace can reduce the overall peak plantar pressure in the foot but increases focal plantar pressure in forefoot. Excessive lifting of the heel seems to minimize the contact area, thus increase focal pressure in forefoot. Overall, plantar pressure seems to be more effectively off-loaded by combining maximum heel clearance and restriction of the ankle joint. Clinical relevance Although effective parameters of patellar tendon bearing brace have been separately addressed in previous studies, no study was found that investigated the combined effect of ankle status and heel clearance. This study investigates the combined effect of these parameters and provides detailed information on clinical application of the patellar tendon bearing brace.
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Tanaka, Hiroyuki, Hisashi Hoshiko, Takeshi Goto, Akio Inoue, and Ryo Sakai. "The Load Bearing Function of Patellar Tendon Bearing Brace." Orthopedics & Traumatology 45, no. 1 (1996): 235–37. http://dx.doi.org/10.5035/nishiseisai.45.235.
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Sunil, T. M. "Efficacy of the Patellar Tendon-Bearing Cast." Journal of Bone and Joint Surgery-American Volume 82, no. 10 (October 2000): 1511–12. http://dx.doi.org/10.2106/00004623-200010000-00025.
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Bhave, Anil, and John E. Herzenberg. "Efficacy of the Patellar Tendon-Bearing Cast." Journal of Bone and Joint Surgery-American Volume 82, no. 10 (October 2000): 1512. http://dx.doi.org/10.2106/00004623-200010000-00026.
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Shahar, R., R. Joseph, J. Milgram, and A. Shipov. "Successful management of bilateral patellar tendon rupture in a dog." Veterinary and Comparative Orthopaedics and Traumatology 21, no. 02 (2008): 181–84. http://dx.doi.org/10.3415/vcot-07-05-0053.
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SummaryA seven-year-old, 41 kg, intact, cross breed dog, was presented with a history of bilateral hind limb lameness after falling from a height of 1 m. Clinical and radiographic findings were consistent with bilateral patellar tendon rupture. Surgical repair was performed bilaterally. The tendons were sutured primarily, and an internal splint of nylon leader was added. Good apposition of the severed tendon ends had been achieved intraoperatively; however, post operative radiographs showed supra-trochlear displacement of both patellae. The casts used to immobilize the stifle joints slipped distally and three days post operatively the tendon repair had broken down, bilaterally. Revision surgery was undertaken and the tendons were re-sutured. Nylon leader was placed through holes that had been drilled in the patellae and tibiae. The stifle joints were immobilized with type I external skeletal fixators (ESFs). Both freeform polymethylmethacrylate (PMMA) connecting bars were found to be broken at the level of the stifle joints two days later, without any disruption of the primary tendon repair. Each connecting bar was replaced with two connecting bars of PMMA reinforced with 3 mm steel wire. The dog was fully weight-bearing with a reduced range of motion in flexion immediately after removal of the ESFs at six weeks and was still sound 18 months post-operatively. Primary tendon repair in combination with adequate immobilization allowed for an excellent outcome in a complicated bilateral pathology.
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Liao, Chi-Yang, and Chun-Li Lin. "Arthrodesis with Retrograde Intramedullary Nail for Recurrent Infected Total Knee Arthroplasty with Patellar Tendon Rupture: A Case Report and Literature Review." Orthopaedic Journal of Sports Medicine 8, no. 5_suppl5 (May 1, 2020): 2325967120S0005. http://dx.doi.org/10.1177/2325967120s00050.
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Patellar tendon rupture after total knee arthroplasty is a rare, but often catastrophic complication. In addition, infection is also a dreaded complication after total knee arthroplasty. We report an 84-year-old female that has late infected total knee arthroplasty with patellar tendon rupture treated with resection arthroplasty and then subsequent arthrodesis with retrograde intramedullary nail. Case Presentation: The 84-year-old female underwent left total knee arthroplasty 2 years ago and revision arthroplasty last year after trauma. She presented to the emergency department with painful disability of left knee. The septic arthritis of left knee was confirmed by bacterial culture through arthrocentesis which yielded methicillinsensitive staphylococcus aureus. Patellar tendon rupture was also noted by loss of extension mechanism and patella alta in plain films. Despite attempts on open debridement and parenteral antibiotics, the infection did not settle. Resection arthroplasty with vancomycin- impregnated cement spacer implantation was performed following by 4-week parenteral antibiotics therapy. The ESR and CRP level of serum improved gradually. Arthrodesis of left knee with retrograde locking intramedullary femoral nail through single incision of the knee was performed. Protected weight bearing was allowed in one week after arthrodesis. The patient discharged 2 weeks later without recurrent infection, but leg length discrepancy about 2cm was noted. Discussion: Patellar tendon rupture after total knee arthroplasty is a rare but disabling complication whose management is often difficult. It was reported that incidence of patellar tendon rupture in literature varies between 0.3- 12.4% for primary total knee arthroplasty and between 1-15% for revision total knee arthroplasty. Contributing factors are excessive dissection and knee manipulation, and trauma. In the literature, various different operative techniques and rehabilitation programs have been described indicating the lack of a golden standard treatment protocol. However, in patients with a total knee arthroplasty, the results have been discouraging. Reconstruction of the patellar tendon can be utilized semitendinosus-gracilis graft with an interference screw and a staple fixation in treating acute ruptures, whereas allografts and synthetic mesh are indicated for chronic cases. Nevertheless, treatment outcomes for ruptured patellar tendon are not good. Gold standard treatment of infected total knee arthroplasty was resection arthroplasty with antibiotic-impregnated bone cement spacer and parenteral antibiotics therapy and then second stage revision total knee arthroplasty until the infection is eradicated. The patella tendon repair and second revision arthroplasty were not suggested by Jake et al. Patellar tendon rupture is best treated with primary repair, but infected prosthetic knee with patellar tendon rupture seemed to be more difficult to manage. Arthrodesis but not revision arthroplasty may be the best choice after infection control to improve the patient’s level of function.
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Boot, D. A., and N. J. Young. "A new directly moulded patellar-tendon-bearing socket." Prosthetics and Orthotics International 9, no. 2 (August 1985): 112–14. http://dx.doi.org/10.3109/03093648509164717.
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Silicone rubbers and casting tapes individually have previously been used in the manufacture of sockets (Swanson, 1972; Sweitzer, 1973; Ruder, 1977; Graves, 1980; Aqualite, 1982). The authors believe that the present combination of these materials to manufacture a directly moulded socket with a complete silicone rubber lining of variable thickness has not previously been described.
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Vailas, A. C., D. M. Deluna, L. L. Lewis, S. L. Curwin, R. R. Roy, and E. K. Alford. "Adaptation of bone and tendon to prolonged hindlimb suspension in rats." Journal of Applied Physiology 65, no. 1 (July 1, 1988): 373–76. http://dx.doi.org/10.1152/jappl.1988.65.1.373.
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The rat hindlimb suspension model was used to ascertain the importance of ground reaction forces in maintaining bone and tendon homeostasis. Young female Sprague-Dawley rats were randomly assigned to either a suspended or a nonsuspended group. After 28 days, femur bones and patellar tendons were obtained for morphological and biochemical analyses. Prolonged suspension induced a significant change in the geometric configuration of the femur middiaphysis by increasing the minimum diameter (12%) without any significant alterations in cortical area, density, mineral, and collagen concentrations. Femur wet weight, length, DNA, and uronic acid concentrations of suspended animals were not significantly different from bones of nonsuspended rats. However, the collagen and proteoglycan concentrations in patellar tendons of suspended rats were 28% lower than the concentrations of matrix proteins in tissues obtained from nonsuspended animals. These data suggest that elimination of ground reaction forces induces alterations in tendon composition and femur diaphyseal shape by changing regional rates in bone remodeling and localized tendon strain. Therefore it appears that ground reaction forces are an important factor in the maintenance of cortical bone and patellar tendon homeostasis during weight-bearing conditions.
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Straszewski, Dariusz, Marcin Plenzler, Joanna Szczepaniak, Robert Śmigielski, Beata Ciszkowska-Łysoń, Marcin Popieluch, and Szymon Kopko. "MRI Evaluation of Patella Alignment Before and After Anatomical Reconstruction of ACL Undergoing Unified Rehabilitation Programme Introduced by CMC Physical Therapy Team." Orthopaedic Journal of Sports Medicine 2, no. 11_suppl3 (November 1, 2014): 2325967114S0014. http://dx.doi.org/10.1177/2325967114s00148.
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Objectives: The aim of the study was to asses the impact of the functional rehabilitation on patella alignment with MRI imaging in patients who underwent the ACL reconstruction. The surgical approach with the use of patellar tendon graft is known to carry the risk of lowering patella height (patella baja), which, in turn, may lead to accelerated cartilage wear in patellofemoral joint. Methods: 30 patients after the anatomical reconstruction of ACL took part in this study (23 male, and 7 female, mean age = 28 ± 10,6 years). During the procedure a patellar tendon graft was used. The Insali-Salvati ratio measured with MRI (images taken pre-procedural, and 9 months after the surgery) was used for the assessment of patellar alignment. The measurements were taken by one radiology specialist on MRI scans in sagittal view in PD sequence. During the examination, patellar joint was in flexion (approx.10 degrees). As the point of reference for patella’s position ISR ratio was in the range of 0.8 - 1.2. All patients were operated on by the same team of surgeons and underwent an unified rehabilitation programme led by a team of selected physiotherapists. The main features of the programme were: an early muscle activation (second day after the procedure); mobilisation of the patella and tissues of the anterior compartment of the knee; weight bearing co-contraction exercises, and the sensomotoric training of the entire kinetic chain of the lower limb. The data recorded was statistically analysed using the Wilcoxon signed-rank test in order to establish parameters’ changes within the study group.. Results: The mean ISR value before the procedure was 0.84 (± 0,1), whereas 9 months after the surgery it was 0.85 (± 0,1). The results’ analysis did not show any statistically significant changes between ISR values. Nine months after the procedure patella baja has not been observed in any of the evaluated patients. Conclusion: The functional rehabilitation programme designed by the CMC team had no negative impact on patella alignment, as no patella baja, which is a common complication after these kinds of surgeries, has been observed. The applied functional rehabilitation programme enabled patients to keep the proper patella alignment, similar to the alignment recorded before the surgery.
Dissertations / Theses on the topic "Patellar tendon bearing"
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Tzeng, Ming-Ji. "Assessing two designs of trans-tibial prosthetic sockets by experimental measurement and numerical analysis." Thesis, University of Strathclyde, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302333.
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Frohm, Anna. "Patellar tendinopathy : on evaluation methods and rehabilitation techniques /." Stockholm, 2006. http://diss.kib.ki.se/2006/91-7140-994-7/.
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Cavenett, Sally Jane. "The effectiveness of total surface bearing compared to specific surface bearing prosthetic socket design on health outcomes of adults with a trans-tibial amputation: a systematic review." Thesis, 2014. http://hdl.handle.net/2440/91289.
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Background Lower-limb prostheses enable life participation for people with amputation. The aim of this systematic review was to synthesise evidence on the effectiveness of total surface bearing (TSB) compared with specific surface bearing (SSB) prosthesis designs on health outcomes. Inclusion criteria Types of participants Trans-tibial amputees aged 14 years and older utilising a TSB or SSB prosthesis. Types of interventions and comparators The intervention was the TSB and the comparator was the SSB design. Types of studies This review considered all relevant quantitative study designs. Outcomes and outcome measures Outcome measures relating to function and mobility, comfort and pain, quality of life and energy expenditure were considered. Search strategy A three-step search strategy across 13 databases and discipline-specific resources was pursued. Published and unpublished studies in English were considered, from database inception to June 2012. Methodological quality Two independent reviewers, using the Joanna Briggs Institute MAStARI appraisal checklists, undertook critical appraisal. Data collection Data about interventions, populations, study methods and outcomes of significance were extracted using the MAStARI tool from the Joanna Briggs Institute. Data synthesis Quantitative data was pooled in statistical meta-analysis using the Cochrane Review Manager Version 5.2 where possible. Where not possible, findings were presented using narrative and tables. Results This review identified and analysed 28 measures assessing the health domains, presenting mixed findings. Twenty-one measures found no difference between socket designs; four found a significant difference favouring the TSB and three found a significant difference favouring the SSB design. Suspension and interface variation was found. Sub-group analysis assessed TSB with gel interface and SSB with foam interface, to examine interface influence. Four measures found no difference and two measures, walking speed and cadence, found a significant difference favouring the TSB design. Further sub-group analysis assessing the influence of pin suspension with TSB compared to supra-condylar suspension with SSB found significant difference favouring TSB design for walking speed and socket preference outcomes. Conclusions The available evidence on the effectiveness of prosthetic socket designs suggests no clear choice between the TSB and SSB. This may be due to variation in interface and suspension utilised. Interpreting the findings, the TSB was as effective as the SSB design in improving health outcomes relating to function, comfort and quality of life. Implications for Practice In finding that the TSB is as effective as the SSB design in improving health outcomes implies that prescription may depend on clinician knowledge and skill-set, funding availability and patient preference. Prosthetists require the skill-set to deliver the TSB design. TSB prescription involves a gel interface, with additional costs; therefore funding is required to enable this prescription. Implications for Research Additional high quality studies involving a larger sample size, across aetiologies are required. Consistency in measures is critical to facilitate comparison and enhance meta-analysis. Studies on cost-effectiveness of socket designs are required to inform choice from a societal perspective.Thesis (M.Clin.Sc.) -- University of Adelaide, School of Translational Health Science, 2014
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Tsai, Hsin-Ji, and 蔡欣記. "Finite element analysis on the below-knee patella tendon bearing socket." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/65575660422690245746.
Full textBooks on the topic "Patellar tendon bearing"
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Hughes, Jim. Distal femur and knee. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198813170.003.0014.
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The knee is one of the main load-bearing joints of the body, and injuries to it can involve damage to the joint or articular surfaces, or fractures to the long bones in case of high-energy trauma. The position of the contralateral leg can cause difficulty in positioning for imaging, but good positioning and technique should allow demonstration of the region for intervention. This chapter covers a selection of orthopaedic procedures involving the distal femur and knee, covering distal femoral plating and LISS plates, tension band wiring of the patella, and cerclage wiring of the patella. Each procedure includes images that demonstrate the position of the C-arm, patient, and surgical equipment, with accompanying radiographs demonstrating the resulting images.
Conference papers on the topic "Patellar tendon bearing"
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Hsu, L. H., M. J. Tzeng, and J. T. Chen. "A Simplified Integration System for the Fabrication of Total Surface Bearing Transtibial Socket by Employing Rapid Prototyping Technology." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48877.
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This project is to validate the preliminary result of rapid prototyping (RP)-based transtibial socket that was reinforced by wrapping a layer of unsaturated polyester resin. By employing contemporary technologies including a scanner, computer-aided engineering systems, a rapid prototyping machine, together with the expertise of a prosthetist, RP-based prosthetic sockets with a comfortable fit to volunteer amputees can be fabricated. However, the expensive cost and complex procedure of using current commercial scanners and CAD systems will be barriers experienced by clinical professionals. As the existing service bureau infrastructure and cheaper RP technology are easily accessed, fabrication and technology cost barriers will be reduced. The remaining problems include the availability of easily-used CAD systems for designing prosthetic sockets, simple scanner and stump duplicating tool. This study therefore focuses on the integration of simplified systems including a vacuum forming tool, compact scanner and an interface system for designing prosthetic sockets. Although the type of PTB (patella tendon bearing) transtibial socket is widely adopted in plaster-based manual process, TSB (total surface bearing) sockets are more acceptable by amputees. Since the concept of TSB socket should obtain the stump mold of an amputee under appropriate pressure by using a specific stump forming tool, editing complex surfaces can be avoided when using a TSB-based stump model to design a socket. The quality of socket fit is expected to improve by a simplified design process in which an interface system based on grid-editing algorithms is utilized. In addition, cheaper RP technology, such as 3-D printing or droplet binding process, can be alternative means to fabricate RP-based prosthetic sockets. By combining TSB stump mold, simplified design process and a cheaper RP machine, this study proposes a simplified integrating system to manufacture RP stump mold. Using this RP stump mold together with the traditional lamination method of infiltrating resin into cotton layers, the RP-based transtibial sockets will then be fabricated easily. The expected result will demonstrate the feasibility of employing cheaper emerging technologies to assist an unskilled prosthetist who will be able to produce good quality of prosthetic socket.