Effective Selective Laser Melting (SLM) molding methods for femur implant design and molding can improve femur implant surgery success rates and enhance patients quality of life. In this study, an individualized femur implant and individualized biological fixed-type femur implant were designed using the parametric modeling method. The implants were then directly manufactured via SLM molding technology as the forming process was carefully analyzed. The results indicate that the proposed implant allows for favorable conjunction of the reconstructed implant model with the surrounding bone tissues under the premise of a relatively small amount of bone-cutting. The proposed implant also shows even pore distribution, good overall connectivity, relatively high bearing capacity, favorable overlapping between supports, and strong inter-pore connectivity. Only a small amount of powder adheres onto the surface and can be directly used after simple sand blasting and polishing. The comprehensive analyses of femur implant modeling and molding methods given in this paper may provide a sound foundation for the design and direct manufacture of individualized femur implants in the future.

用于股骨植入物设计和成型的有效选择性激光熔融（SLM）成型方法可以提高股骨植入物手术的成功率，并提高患者的生活质量。在这项研究中，使用参数化建模方法设计了个性化的股骨植入物和个性化的生物固定型股骨植入物。然后直接通过仔细分析了SLM成型技术作为成型工艺。结果表明，所提出的植入物允许在相对少量的骨切开的前提下将重建的植入物模型与周围的骨组织进行有利的结合。拟议的植入物还显示出均匀的孔分布，良好的整体连通性，相对较高的承载能力，支撑件之间的良好重叠以及牢固的孔间连通性。简单的喷砂和抛光后，仅少量粉末会附着在表面上，并且可以直接使用。本文对股骨植入物的建模和成型方法进行了全面的分析，可以为将来个性化股骨植入物的设计和直接生产提供良好的基础。