The physiological basis for a flexible condylar tibial plateau design |
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| Institution: | 1. Department of Mechanical Engineering, Clinical Mechanics Group, Queen''s University, Kingston, Ontario K7L 3N6, Canada;2. Department of Surgery, Clinical Mechanics Group, Queen''s University, Kingston, Ontario K7L 3N6, Canada;1. DEN-Service de Recherche en Métallurgie Physique, CEA, Université Paris-Saclay, F-91191, Gif-sur-Yvette Cedex, France;2. DEN-Service d’Etudes des Matériaux Irradiés, CEA, Université Paris-Saclay, F-91191, Gif-sur-Yvette, France;1. Division of Neuronic Engineering, KTH Royal Institute of Technology, Hälsovägen 11C, Huddinge 141 52, Sweden;2. MIPS AB, Kemistvägen 1B, Täby 183 79, Sweden;1. Biomechanics Laboratory, School of Sports, Federal University of Santa Catarina, Florianopolis, Santa Catarina CEP: 88040-900, Brazil;2. College of Health and Sport Science, Santa Catarina State, Florianópolis, Santa Catarina, Brazil;3. Labclin Neuromusculoskeletal Rehabilitation and Clinical Biomechanics Laboratory, Florianópolis, Santa Catarina CEP: 88015-310, Brazil;4. Department of Morphological Sciences, School of Biological Sciences, Federal University of Santa Catarina, Florianopolis, Santa Catarina CEP: 88040-900, Brazil;1. Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Agriculture, Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing, 210095, China;2. College of Life Sciences, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China;3. Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing, 210042, China;4. Wuxi Life Foundation Bio-Technology Co., Ltd., 36 Zhenxing Street, Mashan Town, Binhu District, Wuxi, 214000, China;5. Jiangsu Coastal Area Institute of Agricultural Science, Yancheng, 224003, China |
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| Abstract: | Knee resurfacing is a successful treatment for osteo- and rheumatoid arthritis in elderly patients. The application of this treatment to younger more active and obese persons has the potential to produce premature wear, loosening, and undesirable bone remodelling. A new generation of more physiologically compatible components is required for these situations. This paper discusses the design and analysis of a prototype tibial base plate aimed at physiological load transfer. Incorporated in the design are mechanisms to alleviate lift-off phenomena, bone stress concentrations, stress shielding, and micromotion at the bone-implant interface. The design requires viable cancellous bone stock, so that the bone may respond by remodelling to the dynamic loading during normal ambulatory activities. |
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