Functionally graded stem optimizes the fixed and sliding surface coupling mechanism

Mincong Wang, Yuzhu Wang, Yue Meng and Chenglong Pan

Computer Methods in Biomechanics and Biomedical Engineering, 2025, vol. 28, issue 4, 464-476

Abstract: Whether the optimization of fixed surface and sliding surface coupling mechanism is related to the hierarchical level of functionally graded porous stem is unknown. The functionally graded porous finite element stem models were constructed using tetrahedral microstructure with the porosities of 47–95%. The stress distribution for femoral bone gradually strengthened, the stress shielding was decreased along the increase of hierarchical levels of the stem after implantation. The coupling mechanism of fixed and sliding surfaces can be optimized by the functional gradient porous stem, the performance advantages become more prominent with the increase of hierarchical levels of the structure.

Date: 2025
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DOI: 10.1080/10255842.2023.2293654

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