State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, ShaanXi, China.
National Medical Products Administration (NMPA) Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices, Xi'an, ShaanXi, China.
Comput Methods Biomech Biomed Engin. 2023 Sep;26(11):1308-1319. doi: 10.1080/10255842.2022.2115291. Epub 2022 Aug 27.
Gradient porous structure made by additive manufacturing (AM) technology is potential to improve the long-term stability of orthopaedic implants through bone ingrowth while maintaining mechanical safety. In this study, a parametrical optimization methodology for the customized gradient porous implants was developed based on a stress-dependent design algorithm. Clinical requirements and manufacturing capabilities of AM were considered in the design procedure. A femoral stem with a minimum bone loss proportion of 2.4% by optimizing the control parameters. This study provided a feasible and flexible design approach for the customized implant with gradient porous structure or material components.
增材制造（AM）技术制成的梯度多孔结构有望通过骨长入来提高骨科植入物的长期稳定性，同时保持机械安全性。本研究基于一种依赖于应力的设计算法，开发了一种针对定制梯度多孔植入物的参数优化方法。设计过程中考虑了临床要求和 AM 的制造能力。通过优化控制参数，股骨柄的最小骨丢失比例达到 2.4%。本研究为具有梯度多孔结构或材料成分的定制植入物提供了一种可行且灵活的设计方法。
