Effects of bone Young's modulus on finite element analysis in the lateral ankle biomechanics
Effects of bone Young's modulus on finite element analysis in the lateral ankle biomechanics
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骨杨氏模量对踝关节外侧生物力学有限元分析的影响
DOI：
10.3233/abb-140085
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发表时间：
2013-10
影响因子：
2.2
通讯作者：
Zhang Ming
中科院分区：
文献类型：
--
作者：
Feng TN;Jiang CH;Fan YB;Zhang Ming
有限元分析是生物力学研究的有力工具。有限元模拟中使用的生物组织的力学性能主要来自实验数据，这些数据变化很大，有时是不确定的。本研究的目的是研究杨氏模数如何影响脚踝有限元模型的计算。通过计算机模拟和体外实验研究了骨的杨氏模数增量对计算模拟中应力应变结果的影响。以人体足踝标本为研究对象，建立了精确的三维有限元模型。杨氏系数分为4个水平，分别为7.3、14.6、21.9和29.2 GPA。胫骨和腓骨近端完全限制为6个自由度，踝关节通过跟骨后倾10°和20°。6具身体足踝标本与有限元模型加载相同，测量腓骨远端两个位置的应变。杨氏模量值对骨应力的影响较小。随着杨氏模数的增加，骨应变呈线性减小。为了获得满意的表面应变结果，杨氏模数为29.2 GPa时为宜。在未来的研究中，需要构建更理想的模型来表示非线性、各向异性和非均质性，同时提供感兴趣的参数的合理输出。
Finite element analysis FEA is a powerful tool in biomechanics. The mechanical properties of biological tissue used in FEA modeling are mainly from experimental data, which vary greatly and are sometimes uncertain. The purpose of this study was to research how Young's modulus affects the computations of a foot-ankle FEA model. A computer simulation and an in-vitro experiment were carried out to investigate the effects of incremental Young's modulus of bone on the stress and strain outcomes in the computational simulation. A precise 3-dimensional finite element model was constructed based on an in-vitro specimen of human foot and ankle. Young's moduli were assigned as four levels of 7.3, 14.6, 21.9 and 29.2 GPa respectively. The proximal tibia and fibula were completely limited to six degrees of freedom, and the ankle was loaded to inversion 10° and 20° through the calcaneus. Six cadaveric foot-ankle specimens were loaded as same as the finite element model, and strain was measured at two positions of the distal fibula. The bone stress was less affected by assignment of Young's modulus. With increasing of Young's modulus, the bone strain decreased linearly. Young's modulus of 29.2 GPa was advisable to get the satisfactory surface strain results. In the future study, more ideal model should be constructed to represent the nonlinearity, anisotropy and inhomogeneity, as the same time to provide reasonable outputs of the interested parameters.
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DOI：
10.1016/0021-9290(81)90128-7
发表时间：
1981
期刊：
Bulletin of prosthetics research
影响因子：
--
作者：
S. Nakamura;R. Crowninshield;R. R. Cooper-R.
通讯作者：
S. Nakamura;R. Crowninshield;R. R. Cooper-R.
DOI：
10.1080/10255842.2010.493886
发表时间：
2011-01-01
影响因子：
1.6
作者：
Gu, Y. D.;Li, J. S.;Li, Z. Y.
通讯作者：
Li, Z. Y.
DOI：
10.1016/j.apmr.2004.03.031
发表时间：
2005-02-01
影响因子：
4.3
作者：
Cheung, JTM;Zhang, M
通讯作者：
Zhang, M
DOI：
10.1016/s1067-2516(97)80039-7
发表时间：
1997-09
期刊：
The Journal of foot and ankle surgery : official publication of the American College of Foot and Ankle Surgeons
影响因子：
--
作者：
George T. Liu;Lawrence A. Lavery;Robert C. Schenck;D. Lanctot;Chong F. Zhu;K A Athanasiou
通讯作者：
George T. Liu;Lawrence A. Lavery;Robert C. Schenck;D. Lanctot;Chong F. Zhu;K A Athanasiou
DOI：
10.1080/10255842.2011.565751
发表时间：
2012-01-01
影响因子：
1.6
作者：
El Masri, F.;de Brosses, E. Sapin;Mitton, D.
通讯作者：
Mitton, D.