Integration of Modular Prosthesis Analysis and Effect of Patient Weight and Height

• Main Authors: Chih-yu Chou, 周致宇
• Other Authors: Chao-chang A.Chen
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/m2k63g

碩士 === 國立臺灣科技大學 === 機械工程系 === 94 === The research is to establish the design and analysis processes of modular joint with prosthesis for femur, including the construction of bone-prosthesis model (BPM) with an inclined angle between axial directions of stem and femur, and the finite element analysis. The 3-D bone-visual model (BVM), bone-solid model (BSM) and BPM have been defined and used to integrate with the finite element analysis (FEA). A simplified mechanics model has been developed and compared with that of the result of FEA of the BPM with near femur implant. Another FEA result of BPM with distal femur implant has also been investigated and verified with an X-ray image of clinical case. Based on the FEA results of the BPM with near femur implant, different body weight and height have been simulated and analyzed with variant diameter of implant stems. Regression models of maximum von Mises stress of prosthesis and cortical bone have been constructed to forecast the stress distribution of stem and cortical bone. In this research, the lower chance of stem failure is obtained when the stem diameter is larger than 13mm. Therefore, stress distribution and the location of the maximum von Mises stress of cortical bone or stem in BPM can clinically be used to assist in selecting appropriate implant for patient of different body height and weight. Furthermore, the developed method can be applied to implants related to other joints, including knee joint and shoulder joints.