张震;董跃福;苏宏飞;陈秋平;何伟;李鹏飞;董万鹏;

• 1:上海工程技术大学材料工程学院
• 2:徐州医科大学附属连云港医院关节外科

摘要(Abstract)：

[目的]构建轻度OA膝关节的有限元解剖模型,并用于研究在OA膝关节关节软骨和半月板上的应力分布特征。[方法]基于MRI和CT影像数据构建具有骨性结构和非骨性结构的轻度OA膝关节有限元解剖模型,定义材料属性并确定边界条件和轴向载荷,以胫股关节间软骨接触的Mises应力和接触压强为研究指标,分析关节内的应力分布特征。[结果]构建了轻度OA膝关节三维有限元解剖模型,有限元分析结果表明内侧胫骨近端关节软骨接触压强大于外侧室,外侧半月板接触压强峰值大于内侧室;股骨远端与胫骨近端关节软骨边缘处Mises应力峰值大于胫股关节间软骨接触部分,外侧半月板最大Mises应力位于半月板中部,而内侧半月板最大Mises应力位于半月板后部。[结论] OA膝关节内应力分布特征不同于正常膝关节,内侧半月板半脱位和关节软骨退变的特征促进了膝OA的进一步发展。

关键词(KeyWords)： 膝骨关节炎;有限元分析;解剖模型

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（编号：31670956）;; 克拉玛依市科技重大专项项目（编号：2018ZD002B）;; 科技援疆计划项目（编号：2019E0235）

作者(Author): 张震;董跃福;苏宏飞;陈秋平;何伟;李鹏飞;董万鹏;

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DOI:

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