Design and Development of 3D-Printed Personalized Femoral Prosthesis Technologies

The femur supports the entire body weight, and any damage or necrosis to this bone can significantly impair normal walking. Therefore, repairing the femur is essential to restoring its function. However, due to variations in human bone structure, standardized prostheses often deliver poor repair outcomes. We used the medical three-dimensional (3D) auxiliary software Mimics to design personalized femoral prostheses to address this issue. The femoral prosthesis filler was porous, and all aspects of the prosthesis were thoroughly studied and analyzed before direct molding using 3D printing technology. The personalized femoral prosthesis filler and bone plate designed using 3D printing technology have positive effects, and the matching between the femoral prosthesis, bone plate, and filler is satisfactory. The pore structure of the 3D-printed femoral prosthesis filler and the bone plate is clear and of high quality, which shortens the research and development cycle and reduces costs, providing a foundation for the direct application of 3D-printed personalized prostheses.