Developing The Custom-made Femoral Component of Knee Prosthesis using CAD / CAM

The femoral component of knee prosthesis is a biomedical element with complex surface, and the design and production is a complicated task. In this paper, the femoral component of knee prosthesis is studied based on the reverse engineering (RE) system and multi-axis machining. The knee joint 3D geometric model is obtained by using the Mimics software with the computer tomography (CT) medical images and magnetic resonance image (MRI) firstly. The necessary constrains based on surgical experience are integrated into the CAD system. In the process planning of NC machining, the cutting sequence for rough and finish machining is arranged. Through the application of CAM software, the interference-free toolpath and the cutter location file for multi-axis NC machining are generated. The cutting simulations with solid model are performed to verify the generated toolpath and NC program. It is also verified through the real cut on a five-axis machine tool. [Jeng-Nan Lee, Chih-Wen Luo, et al. Developing The Custom-made Femoral Component of Knee Prosthesis using CAD/CAM. Life Sci J 2013;10(2):259-264] (ISSN: 1097 – 8135) http://www.lifesciencesite.com. 41