Stress distribution of the foot during mid-stance to push-off in barefoot gait: a 3-D finite element analysis
Stress distribution of the foot during mid-stance to push-off in barefoot gait: a 3-D finite element analysis
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DOI：
10.1016/s0268-0033(01)00047-x
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发表时间：
2001-08-01
影响因子：
1.8
通讯作者：
Ju, CW
中科院分区：
文献类型：
--
作者：
Chen, WP;Tang, FT;Ju, CW
Objective.使用3-D有限元分析来量化赤脚步态从站立中期到蹬地期间足部的应力分布。设计。模拟足部结构，便于以后考虑穿鞋。建立有限元模型，模拟赤脚步态从站立中期到蹬地的受力情况，定量分析应力分布。计算模型可以提供经受各种负载条件的脚的整体应力分布。基于男性受试者的计算机断层扫描数据生成初步的3-D有限元足部模型，并对骨和软组织结构进行建模。对模拟赤脚步态在站立中期到蹬地的加载条件进行分析。足底压力峰值范围为374 ~ 1003 kPa。骨内峰值应力在2.12 ~ 6.91MPa之间。足底压力模式与以往文献的测量结果相似。本研究提供了一个初步的计算模型，能够估计整体足底压力和骨应力分布。它还可以为正常和病理性足部运动提供定量分析。
Objective. To quantify stress distribution of the foot during mid-stance to push-off in barefoot gait using 3-D finite element analysis.Design. To simulate the foot structure and facilitate later consideration of footwear. Finite element model was generated and loading condition simulating barefoot gait during mid-stance to push-off was used to quantify the stress distributions.Background. A computational model can provide overall stress distributions of the foot subject to various loading conditions.Methods. A preliminary 3-D finite element foot model was generated based on the computed tomography data of a male subject and the bone and soft tissue structures were modeled. Analysis was performed for loading condition simulating barefoot gait during mid-stance to push-off.Results. The peak plantar pressure ranged from 374 to 1003 kPa. and the peak von Mises stress in the bone ranged from 2.12 to 6.91 MPa at different instants. The plantar pressure patterns were similar to measurement result from previous literature.Conclusions. The present study provides a preliminary computational model that is capable of estimating the overall plantar pressure and bone stress distributions. It can also provide quantitative analysis for normal and pathological foot motion.