Stress-dependent design and optimization methodology of gradient porous implant and application in femoral stem

Changning Sun, Jianfeng Kang, Ling Wang, Zhongmin Jin, Chaozong Liu and Dichen Li

Computer Methods in Biomechanics and Biomedical Engineering, 2023, vol. 26, issue 11, 1308-1319

Abstract: 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.

Date: 2023
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DOI: 10.1080/10255842.2022.2115291

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