Design and Analysis of Surface Replacement Prosthesis for Patellofemoral Joint

• Main Authors: Sheng-Tsai Wu, 吳昇財
• Other Authors: Shang-Chih Lin
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/23206593305356262539

碩士 === 國立中央大學 === 機械工程研究所 === 96 === In recent years, because the improvement of lifestyle and medical science has increased human age and the elder patient has increased every year too. The most obvious example is the osteoarthritis. Now the way of cure for isolated patellofemoral osteoarthritis has total knee replacement and surface replacement prosthesis for patellofemoral joint. It can improve inconvenient action of knee and unbalance of soft tissue nearby patella by osteoarthritis and then procure the normal slide of patella and femur. The advantage of surface replacement prosthesis for patellofemoral joint is not as much bone removed. Furthermore, it will perform the total knee replacement if the osteoarthritis becomes serious in future. The most serious problem in the prosthesis for patellofemoral joint has consisted in the implant unstable and cave after the PFA surgery. Because the size of implant is ready made, the curved surface of implant can''t complete match with the joint of an affected part. This research has aimed at the defect of nowadays design in clinical. Think of the difference between curved surface of implant and patellofemoral joint have combined with the reconstructing technology of medical image. We has construct the custom-made implant of patellofemoral joint and its surgical instruments and to estimate the feasibility by imitate the actual operation. In order to improve the design of the prosthesis for patellofemoral joint, we also has reconstruct the analytic simulation for kinematic of the knee.