踝关节三维有限元数字模型的建立

背景:对于踝关节的生物力学的研究日益成为热点,也从以往传统的生物力学已发展到有限元力学分析。目的:建立踝关节的三维有限元数字模型,探讨踝关节各组成部分的应力分布规律。方法:对一名成年女子行踝关节螺旋CT扫描,将所得图像经Mimics、Geomagic处理,得到三维有限元数字模型。结果与结论:建成了包括胫腓骨下段、距骨的三维有限元数字模型。该模型外形逼真,几何相似性好,可以随意旋转,方便从多角度观察模型,采集三维信息,适合进行生物力学研究。

Establishment of a three-dimensional finite element digital model for ankle joint

BACKGROUND:Biomechanics research of ankle joint increasingly becomes a hot spot.Research method in previous studies is traditional biomechanical research that has developed to finite element mechanical analysis OBJECTIVE:To establish a three-dimensional finite element digital model of ankle joint and to discuss the stress distribution of various components in the ankle joint.METHODS:An adult woman was selected to treat with spiral CT scanning on ankle.The obtained images were processed by Mimics and Geomagic for the establishment of three-dimensional finite element digital model.RESULTS AND CONCLUSION:The three-dimensional finite element digital model was established,including distal tibiofibular shaft and talus.With realistic appearance and excellent geometry-comparability,the rotatable model of ankle is available to be observed from different perspectives,to be collected three-dimensional data and is valid for biomechanical study.