活动平台单髁膝关节置换胫骨后倾的有限元分析

被引:24
作者
朱广铎 [1 ,2 ]
郭万首 [1 ,2 ]
程立明 [2 ]
刘朝晖 [2 ]
张启栋 [2 ]
机构
[1] 北京协和医学院研究生院
[2] 中日友好医院骨关节外科
关键词
关节成形术,置换,膝; 有限元分析; 应力,物理; 生物力学; 组织工程; 骨科植入物; 人工假体; 单髁膝关节置换; 活动平台; 胫骨后倾; 胫骨前倾; 骨应力; 接触应力;
D O I
暂无
中图分类号
R687.4 [关节手术];
学科分类号
100220 [骨科学];
摘要
背景:目前单髁膝关节置换中胫骨假体后倾角度的选择存在较多争议,相关的生物力学研究较少。目的:通过有限元分析结果寻求活动平台单髁膝关节置换中合理胫骨后倾的角度。方法:运用三维重建技术及有限元前处理技术建立正常膝关节有限元模型,并进行验证,在此基础上建立不同胫骨假体后倾角度的单髁膝关节置换有限元模型,统一边界条件和载荷,行有限元分析。结果与结论:成功建立了不同胫骨后倾角度的单髁膝关节置换有限元模型,分析结果发现增大胫骨假体后倾可使胫骨后内侧皮质及松质骨应力逐渐增加,且增大了外侧间室载荷和软骨接触应力,而胫骨前倾使胫骨前内侧皮质应力明显增加。推荐活动平台单髁膝关节置换中选择0°-7°胫骨假体后倾。
引用
收藏
页码:7156 / 7162
页数:7
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