提踵状态下足纵弓应力分布有限元分析

Analysis on Finite Element of Instep Stress Distribution at Heel Raising

根据实拍女性提踵状态下第一跖纵弓MRI成像,综合考虑骨、软骨、足底肌、腱膜等各种材料特性,通过Ansys有限元分析软件建模和Novelpedar实测足底压力分布变化值,计算得出提踵步态周期各个阶段的第一跖纵弓应力。发现第一跖骨、楔骨、距舟关节和腱膜等处出现相对较高的应力值,从力学角度解释了由于提踵动作引起的常见足病部位,验证了其产生的原因和所建立分析模型的可靠性。

Based on real model of first metatarsal vertical arch of foot and considering the geometric and material properties of both skeletal and soft tissue components of foot using finite element solver,the stress distribution within the first metatarsal vertical arch of foot structure was obtained. The result showed that the high Von raises stress value appearing in the first metatarsus cuneiform and plantar aponeurosis from the point of biomechanical explanation, validated the reasons and reliability of analyzing model that setting up.