膝关节后外侧结构生物力学的有限元分析  

Finite element analysis of biomechanics of knee joint including posterolateral structures

作　　者：刘晓敏[1] 刘杰[1] 吕劲[1] 袁锦波[1] 蒲勇华[1] 吴松[2] 

机构地区：[1]湖南中医药高等专科学校,湖南省株洲市412012 [2]中南大学湘雅三医院骨科,湖南省长沙市410013

出　　处：《中国组织工程研究》2012年第39期7259-7262,共4页Chinese Journal of Tissue Engineering Research

基　　金：湖南省教育厅资助科研项目(11C0977)~~

摘　　要：背景:有限元分析作为一种数值分析手段,适用于三维人体结构力学模型的生物力学分析。目的:采用有限元分析膝关节后外侧结构主要韧带(外侧副韧带、腘肌腱和腘腓韧带)的生物力学特点。方法:建立人膝关节包括后外侧结构的三维有限元模型,在模型上施加胫骨的前后向力、内外翻力矩、内外旋力矩,观察膝关节后外侧韧带在完整和缺失时的应力响应。结果与结论:膝关节后外侧结构对限制膝关节的内翻、外旋和胫骨后移有重要作用,而对限制胫骨前移、外翻和内旋的作用并不明显。膝关节后外侧结构损伤对膝关节的稳定性有明显影响。在膝关节后外侧结构中起主要作用的是外侧副韧带,其次是腘肌腱,而腘腓韧带在后外侧结构中起辅助作用。BACKGROUND： Finite element analysis is a numerical analysis method and suitable for analyzing the biomechanics of the human body through three-dimensional finite element. OBJECTIVE： To analysis the biomechanics of the main posterolateral knee ligament （lateral collateral ligament, popliteus tendon and popliteofibular ligament）. METHODS： Firstly, the three-dimensional finite element model of the knee including posterolateral structures was established. Secondly, the stress response of posterolateral structures was analyzed by applying the power of forward and backward, the torque of turning inward and outward and the torque of internal and external rotation to the tibia. RESULTS AND CONCLUSION： Posterolateral structures had an important role in limiting the knee to turning inward, internal rotation and moving backward of the tibia, but the limitation on the knee to turning outward, external rotation and moving forward of the tibia was not obvious. The results showed that the posterolateral structures have an obvious influence on the stability of the knee. The lateral collateral ligament plays a major role in the knee posterolateral structures and followed by the popliteal tendon, and popliteofibular ligament plays a supporting role in the posterolateral structures.

关 键 词：膝关节 生物力学 三维有限元 膝关节后外侧结构 数字化骨科 

分 类 号：R318[医药卫生—生物医学工程]