踏跳瞬间足后部骨骼的三维有限元分析  

Three dimensional finite element analysis of hind foot bones in jumping moment

作　　者：李建设[1] 顾耀东[1] Mark Lake James Ren 曾衍钧[3] 

机构地区：[1]宁波大学运动人体科学实验室,宁波315211 [2]School of Sport and Exercise Sciences,Liverpool John Moores University,UK [3]北京工业大学,北京100022

出　　处：《医用生物力学》2008年第2期127-130,共4页Journal of Medical Biomechanics

摘　　要：目的建立足部三维有限元模型,对足后部骨骼在踏跳中的应力分布进行分析。方法应用CT扫描和CAD/CAM软件处理,建立足后部骨骼三维模型。通过对背跃式跳高踏跳的足底压力测量和逆向肌肉力量计算,确定载荷约束条件,并进行有限元计算。结果获得了踏跳瞬间,跟骨、距骨、舟骨等易损伤部位的生物力学响应和应力分布,发现跟骨后距关节,距骨背面均为应力集中处。结论本研究建立的模型可用于足后部骨骼生物力学研究,为踏跳中的运动损伤力学机理提供数据。Objective To develop a three-dimensional finite element model of human foot for studying stress distribution of the hind foot bones during the jumping moment. Methods CT scanning and CAD/CAM software were used to establish the hind foot bones model. By using plantar pressure of back flop high-jump and calculating the inverse muscle strength, the loads and constraints conditions were simulated. Results Stress distribution of calcaneus, talus and navicular were analyzed during the landing of heel. Stress concentration was found at subtalar joint and dorsal of talus. Conclusion This model can be applied in biomechanical studies of the hind foot bones, especially for providing analytic data to explain the mechanism of jumping-induced injury.

关 键 词：骨骼模型 踏跳 应力集中 有限元分析 

分 类 号：R318.01[医药卫生—生物医学工程]