Qian Yu, Cheng Yunzhang, Chen Shiyao, Zhang Mingwei, Fang Yingyu, Zhang Tianyi
School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China.
Shanghai Engineering Research Center of Interventional Medical Device, Shanghai, China.
Med Biol Eng Comput. 2025 Feb;63(2):417-428. doi: 10.1007/s11517-024-03206-9. Epub 2024 Oct 3.
The aim of this study was to investigate and compare the biomechanical properties of the conventional and novel hip prosthetic socket by using the finite element and gait analysis. According to the CT scan model of the subject's residual limb, the bones, soft tissues, and the socket model were reconstructed in three dimensions by using inverse modeling. The distribution of normal and shear stresses at the residual limb-socket interface under the standing condition was investigated using the finite element method and verified by designing a pressure acquisition module system. The gait experiment compared and analyzed the conventional and novel sockets. The results show that the simulation results are consistent with the experimental data. The novel socket exhibited superior stress performance and gait outcomes compared to the conventional design. Our findings provide a research basis for evaluating the comfort of the hip prosthetic socket, optimizing and designing the structure of the socket of the hip.
本研究的目的是通过有限元分析和步态分析来研究和比较传统与新型髋关节假肢接受腔的生物力学特性。根据受试者残肢的CT扫描模型，采用逆向建模方法对骨骼、软组织和接受腔模型进行三维重建。利用有限元方法研究了站立状态下残肢-接受腔界面处的正应力和剪应力分布，并通过设计压力采集模块系统进行了验证。步态实验对传统和新型接受腔进行了比较和分析。结果表明，模拟结果与实验数据一致。与传统设计相比，新型接受腔具有更好的应力性能和步态结果。我们的研究结果为评估髋关节假肢接受腔的舒适性、优化和设计接受腔结构提供了研究依据。
