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首页> 外文期刊>Journal of Biomechanics >Comparison of different material models of articular cartilage in 3D computational modeling of the knee: Data from the Osteoarthritis Initiative (OAI)
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Comparison of different material models of articular cartilage in 3D computational modeling of the knee: Data from the Osteoarthritis Initiative (OAI)

机译：膝关节3D计算建模中关节软骨的不同材料模型的比较：骨关节炎计划（OAI）的数据

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摘要

The intricate properties of articular cartilage and the complexity of the loading environment are some of the key challenges in developing models for biomechanical analysis of the knee joint. Fibril-reinforced poroelastic (FRPE) material models have been reported to accurately capture characteristic responses of cartilage during dynamic and static loadings. However, high computational and time costs associated with such advanced models limit applicability of FRPE models when multiple subjects need to be analyzed. If choosing simpler material models, it is important to show that they can still produce truthful predictions. Therefore, the aim of this study was to compare depth-dependent maximum principal stresses and strains within articular cartilage in the 3D knee joint between FRPE material models and simpler isotropic elastic (IE), isotropic poroelastic (IPE) and transversely isotropic poroelastic (TIPE) material models during simulated gait cycle.
机译：关节软骨的复杂特性和负荷环境的复杂性是开发膝关节生物力学分析模型的关键挑战。据报道，原纤维增强的多孔弹性（FRPE）材料模型可准确捕获动态和静态载荷过程中软骨的特征响应。但是，当需要分析多个主题时，与此类高级模型相关的高计算量和时间成本会限制FRPE模型的适用性。如果选择更简单的材料模型，重要的是要表明它们仍然可以产生真实的预测。因此，本研究的目的是比较FRPE材料模型与更简单的各向同性弹性（IE），各向同性多孔弹性（IPE）和横观各向同性多孔弹性（TIPE）之间的3D膝关节中取决于深度的最大主应力和应变。步态周期中的材料模型。

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