摘要
目的有限元法分析踝关节周围韧带损伤对距骨生物力学稳定性的影响,为临床踝关节周围韧带损伤的治疗提供理论依据。方法基于正常男性的足踝部螺旋CT扫描数据,运用三维重建软件,建立足踝部三维几何模型,最后导入Abaqus 6.9软件中,模拟人体踝关节内旋、外旋的受力状况,分析踝关节周围韧带损伤后距骨各关节面的接触压力及VonMises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,踝关节周围韧带在踝关节内旋、外旋时对距骨的生物力学影响不同。结论在外旋作用力下胫距后韧带对踝关节的稳定性具有重要作用,而在内旋作用力下跟腓韧带对踝关节的稳定性具有重要作用。
Objective To explore the biomechanical properties of the talus in different ankle ligament injury through finite element analysis and therefore to provide theoretical basis for the clinic treatment of ankle ligament injury.Methods CT scan data,three-dimensional anatomically detailed finite element models was used to simulate human ankle joint internal rotation,external rotation stress state of the finite element analysis.The contact pressure and Von Mises stress distribution of the talar articular surface were compared in different ankle ligament injury.Results The three-dimensional finite element model of bone,cartilage and ligaments of the normal human ankle was established.The biomechanical stability of the talus which influenced by the ankle ligament was different in the internal rotation and external rotation force.Conclusion The anterior tibiotalar ligament playes an important role in ankle stability under external rotation force while under internal rotation force,calcaneofibular ligament playes an important role.
出处
《中国骨与关节损伤杂志》
2012年第2期121-124,共4页
Chinese Journal of Bone and Joint Injury
基金
国家自然科学基金资助项目(81071233)
关键词
踝关节
韧带损伤
距骨
生物力学
有限元法
Ankle
Talus
Ligament injury
Biomechanics
Finite element analysis
