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Computational modeling of polyethylene wear in total hip arthroplasty using patient-specific kinematics-coupled finite element analysis

机译:患者特异性运动学耦合有限元分析计算总髋关节置换术中聚乙烯磨损的计算建模

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摘要

Computational modeling of polyethylene wear based on patient-specific gait kinematics and component orientation remains lacking. This study aimed to quantify the polyethylene wear among 48 total hip arthroplasty (THA) using patient-specific data through a computational model incorporating the cross-shear effect. Strong patient variations were observed in volumetric wear rate (54.1 +/- 13.9 mm(3)/year) and linear wear rate (0.20 +/- 0.08 mm/year). Regression analysis demonstrated that axial plane rotation, in light of its influence on cross-shear effect, plays an important role in polyethylene wear. The computational model based on patient specific gait kinematics and component orientation provides a useful tool to investigate the in-vivo polyethylene wear.
机译:基于患者特异性步态运动学和组分取向的聚乙烯磨损的计算建模仍然缺乏。 本研究旨在通过掺入交叉剪切效果的计算模型来量化48个总髋关节置换术(THA)中的聚乙烯磨损。 以体积磨损率(54.1 +/- 13.9mm(3)/年)和线性磨损率(0.20 +/- 0.08 mm /年),观察到强烈的患者变化。 回归分析证明,轴向平面旋转,鉴于其对交叉剪切效果的影响,在聚乙烯磨损中起重要作用。 基于患者特异性步态运动学和组分取向的计算模型提供了一种研究体内聚乙烯磨损的有用工具。

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