Biomechanical analysis of metacarpophalangeal joint arthroplasty with metal-polyethylene implant: An in-vitro study
| العنوان: | Biomechanical analysis of metacarpophalangeal joint arthroplasty with metal-polyethylene implant: An in-vitro study |
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| المؤلفون: | Fernando Taveira da Fonseca, D. Melo, António Completo, A. Nascimento |
| المصدر: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Male, medicine.medical_treatment, Biophysics, Strain (injury), Finite element mode, Arthroplasty, Metacarpophalangeal Joint, 03 medical and health sciences, Finger Phalanges, 0302 clinical medicine, medicine, Humans, Orthopedics and Sports Medicine, Joint (geology), Reduction (orthopedic surgery), Orthodontics, business.industry, 030229 sport sciences, Metacarpophalangeal joint, Experimental strains, Prostheses and Implants, Phalanx, Stress shielding, Middle Aged, medicine.disease, Carbon, Biomechanical Phenomena, medicine.anatomical_structure, Metals, Polyethylene, MCP joint, SR MCP system, Regression Analysis, Implant, Stress, Mechanical, business, Stress-shielding, 030217 neurology & neurosurgery |
| الوصف: | Background The most common implant options for the metacarpophalangeal joint arthroplasty include silicone, pyrocarbon and metal-polyethylene. A systematic review of outcomes of silicone and pyrocarbon implants was conducted; however, a similar exercise for metal-polyethylene implants revealed a scarcity of published results and lack of long-term follow-up studies. The aim of the present work is to test the hypothesis that the magnitude of metacarpophalangeal joint cyclic loads generates stress and strain behaviour, which leads to long-term reduced risk of metal-polyethylene component loosening. Methods This study was performed using synthetic metacarpals and proximal phalanges to experimentally predict the cortex strain behaviour for both intact and implanted states. Finite element models were developed to assess the structural behaviour of cancellous-bone and metal-polyethylene components; these models were validated by comparing cortex strains predictions against the measurements. Findings Cortex strains in the implanted metacarpophalangeal joint presented a significant reduction in relation to the intact joint; the exception was the dorsal side of the phalanx, which presents a significant strain increase. Cancellous-bone at proximal dorsal region of phalanx reveals a three to fourfold strain increase as compared to the intact condition. Interpretation The use of metal-polyethylene implant changes the strain behaviour of the metacarpophalangeal joint yielding the risk of cancellous-bone fatigue failure due to overload in proximal phalanx; this risk is more important than the risk of bone-resorption due to the strain-shielding effect. By limiting the loads magnitude over the joint after arthroplasty, it may contribute to the prevention of implant loosening. |
| تدمد: | 1879-1271 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c597544156292aaab5ce6437880476ae https://pubmed.ncbi.nlm.nih.gov/30710796 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....c597544156292aaab5ce6437880476ae |
| قاعدة البيانات: | OpenAIRE |
Full Text via ClinicalKey | تدمد: | 18791271 |
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