The mechanical response of Achilles tendon during different kinds of sports

Communications in Numerical Methods in Engineering Pub Date : 2008-12-01 DOI:10.1002/CNM.1096

Y. Gu, J. S. Li, M. Lake, X. Ren, Yanjun Zeng

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引用次数: 7

Abstract

SUMMARY The present study investigated the mechanical properties of human Achilles tendon (AT) during different forms of human locomotion, by combining biomechanical tests and numerical modelling. A Pedar-X plantar pressure measurement system and Mega multichannel SEMG system were used to measure the dynamic data of a female athlete during hopping and walking. The human Achilles tendon force (ATF) was determined through inverse muscle force calculation. A 3D finite element (FE) model was developed using subject-specified CT images to simulate the deformation of AT during hopping and walking. The stress/strain within the AT during different subphases (e.g. heel strike, midstance, forefoot contact, push off and toe off) was successfully predicted. Results showed that the muscle forces in hopping were much higher than in normal gait. The maximum stress in hopping was three times of that in walking. The tendon stress increased with external load over different subphases and the maximum ATF was found to be in the push-off phase. Copyright q 2008 John Wiley & Sons, Ltd.

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不同运动形式下跟腱的力学反应

本研究采用生物力学试验和数值模拟相结合的方法，研究了人类跟腱(AT)在不同形式的人体运动中的力学特性。采用Pedar-X足底压力测量系统和Mega多通道肌电信号系统测量女运动员跳跃和行走的动态数据。通过逆肌力计算确定人体跟腱力(ATF)。利用受试者指定的CT图像建立了三维有限元模型，模拟了AT在跳跃和行走过程中的变形。成功地预测了AT内不同亚阶段(例如脚跟撞击、中步、前脚接触、推离和脚趾脱落)的应力/应变。结果表明，跳跃时的肌力明显高于正常步态。跳跃的最大压力是步行的三倍。在不同的子阶段，肌腱应力随外载荷的增加而增加，最大的ATF出现在推离阶段。版权所有2008年John Wiley & Sons有限公司

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Communications in Numerical Methods in Engineering

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