基于三维膝-踝-足有限元模型的足跟痛足底压力生物力学分析

发布时间：2018-02-23 06:06

本文关键词： 足跟痛鞋垫有限元分析生物力学　出处：《医用生物力学》2017年05期 　论文类型：期刊论文

【摘要】：目的通过有限元方法研究鞋垫参数变化对足跟痛患足生物力学机制的影响。方法基于CT图像数据建立足跟痛患者足部、小腿骨骼、腓肠肌及膝关节三维有限元模型,通过改变鞋垫形状、厚度及硬度仿真计算足底压力分布及应力峰值。结果有限元模型足底压力分布与压力测量板的足底压力分布部位大体一致,数值非常接近。与裸足站立相比,穿着平板式、半接触式和全接触式鞋垫时足跟区压力峰值分别下降20.5%、59.2%和38.4%,跖骨头区压力峰值分别下降9.9%、18.1%和46.7%。足跟痛患者足底表面足跟区和跖骨头区域压力峰值均随鞋垫常规厚度的增加而减小,并随硬度的减小而减小。结论鞋垫参数的改变对足底压力产生显著的变化。有限元分析有助于足跟痛病因病理的了解,为临床治疗提供理论基础。
[Abstract]:Objective to study the effect of insole parameters on the biomechanical mechanism of heel pain by finite element method. Methods based on CT image data, a three-dimensional finite element model of foot, calf bone, gastrocnemius and knee joint of patients with heel pain was established. By changing the insole shape, thickness and hardness, the foot pressure distribution and the stress peak value were simulated. Results the plantar pressure distribution of the finite element model was approximately the same as that of the plantar pressure distribution of the pressure measuring plate. The value is very close. Compared to standing with bare feet, wearing a flat plate, The peak pressure of heel area decreased by 59.2% and 38.4%, respectively, and the peak pressure of metatarsal head area decreased by 9.9% and 46.7%, respectively. The peak pressure of heel area and metatarsal head area of patients with heel pain decreased by 9.9% and 46.7%, respectively. The peak pressure of heel area and metatarsal head area of patients with heel pain decreased by 9.9% and 46.7%, respectively. The degree increases and decreases, Conclusion the change of insole parameters has a significant effect on sole pressure. Finite element analysis is helpful to understand the etiology and pathology of heel pain and provide a theoretical basis for clinical treatment.
【作者单位】：上海理工大学医疗器械与食品学院;
【基金】：上海市科委医学引导项目(12401907700) 上海市卫计委基金(201540297) 微创励志创新基金(YS30808107)
【分类号】：R318.01;R681.8

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