Digital design and manufacturing technology of customized hip prosthesis

GUAN Xiaodong1, GUO Yiwei1, XU Kaihuai1, WU Qi2, PANG Bang1, XI Wenming1

（1.School of Physics and Mechanical and Engineering, Xiamen University, Xiamen 361005, China;
2.The 82 Hospital of Peoples Liberation Army, Huaian 223001, China)

Abstract: Aiming at the personal design of human hip joint and the stable force transmission after the matching of traditional prosthesis and femur, digital design of the human hip prosthesis , finite element analysis of force transfer and digital processing based on robot grinding were studied. The method of unifying hip prosthesis model in the process of design, simulation and processing was proposed to realize the integration of digital design of customized prosthesis, finite element analysis of force transfer and robotic grinding processing and both digital design and manufacture of hip prosthesis and service model of product life cycle were preliminary established to provide the basis for the applications of digital design and manufacturing technology in orthopaedic Implants, such as hip prosthesis. The results show that customized prosthesis produced by robotic digital grinding could effectively improve the manufacturing precision and achieve the optimal matching of prosthesis and femoral medullary cavity by keeping the robot software space consistent with the actual working space.

Key words: customization; hip joint prosthesis; digital design and manufacture; robot grinding