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Erschienen in:
2021 | OriginalPaper | Buchkapitel
Finite Element Analysis of Knee Joint with Special Emphasis on Patellar Implant
verfasst von : M. A. Kumbhalkar, D. T. Rangari, R. D. Pawar, R. A. Phadtare, K. R. Raut, A. N. Nagre
Erschienen in: Trends in Mechanical and Biomedical Design
Verlag: Springer Singapore
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Abstract
Patella is supporting part of knee and also guide for quadriceps or patellar tendon. Patellar implant is used for proper functioning of patella after injury. For implant, it is required to cut injured portion of host patella and keep remaining part minimum up to 12–14 mm and overstuffing of 2 mm to prevent patellar fractures. The patellar implant makers provide only 8-mm-thick implant to maintain original patellar thickness which is difficult to achieve especially in patients with host bone thickness less than 20 mm. Hence, there is need to analyze for reduction in thickness of patellar implant from 8 to 6 mm for perfect engagement with adequate residual bone. The critical force analysis on host patella with tendon is carried out for quadriceps force, patellofemoral force, and patellar tendon force using analytical and finite element method. Two cases are considered for the force and stress analysis of patella, and the comparison of various implant thicknesses is discussed.