| 正常步态下距骨关节面接触特征的有限元分析 |
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| 引用本文： | 卢昌怀,余斌,陈辉强,林庆荣. 正常步态下距骨关节面接触特征的有限元分析[J]. 中国矫形外科杂志, 2011, 19(5): 402-405 |
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| 作者姓名： | 卢昌怀 余斌 陈辉强 林庆荣 |
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| 作者单位： | 南方医科大学南方医院创伤骨科,广州,510515 |
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| 摘 要： | [目的]通过有限元法分析正常步态下距骨各关节面软骨应力变化,了解各关节面软骨应力分布的生物力学特征.[方法]利用正常男性的足踝部螺旋 CT 扫描数据,运用三维建模软件,建立足踝部三维几何模型,并对其进行有限元网格划分,分析正常步态下距骨各关节面接触应力及 Von Mises 应力分布.[结果]建立包括骨、软骨、韧带在内的正常人体足踝部三维有限元模型,共21 865 个节点、73 440 个单元,较客观地反映了人体足踝的解剖结构和力学特性.不同位相距骨各关节面接触应力及 Von Mises 应力分布区域和应力值不同.[结论]采用有限元法分析关节软骨应力的生物力学特征是一种可行、有效的方法.
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| 关 键 词： | 距骨 关节软骨 有限元法 生物力学 |
Contact characteristics of articular surfaces for talus during gait-a finite element analysis |
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| LU Chang-huai,YU Bin,CHEN Hui-qiang,et al.. Contact characteristics of articular surfaces for talus during gait-a finite element analysis[J]. Orthopedic Journal of China, 2011, 19(5): 402-405 |
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| Authors: | LU Chang-huai YU Bin CHEN Hui-qiang et al. |
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| Affiliation: | LU Chang-huai,YU Bin,CHEN Hui-qiang,et al.Department of Orthopaedics and Traumatology,Nanfang Hospital,Southern Medical University,Guangzhou 510515,China |
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| Abstract: | [Objective]To construct a three-dimensional finite element model(FEM) of normal adult human ankle in order to supply a digital platform for biomechanical research of talar cartilage stress during gait,and understand the stress distribution of cartilage biomechanical characteristics. [Methods]A three-dimensional FEM of normal adult human ankle was established through helical CT images and meshed,for analysis of contact pressure and Von Mises stress distribution of cartilage during gait.[Results]An ankle mode... |
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| Keywords: | talus articular cartilage finite element analysis biomechanics |
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