骑行时不同屈曲角度膝关节软骨受力分析

doi:10.3969/j.issn.0258-8021. 2016. 01.015

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摘要在对骑行人车系统动力学研究的基础上，分析在骑行周期内膝关节软骨的受力状态，以期获得关节软骨受力的规律，增加对骑行时膝关节生物力学特性的理解。基于有限元分析法，建立包括股骨、胫骨、腓骨、髌骨、关节软骨、半月板及韧带组织的人体全膝关节有限元模型。将骨组织刚体化，并对其施加屈曲位移边界条件，包括胫骨相对股骨的内旋、内收、前移和外移以及髌骨相对股骨的屈曲、内旋、内倾以及外移。通过显式动力学分析计算，获得膝关节屈曲60°、80°和100°相位，同时得到骑行状态上述屈曲位处膝关节软骨的应力分布。结果通过有限元分析，获得骑行姿态下膝关节相关相位的力学分布规律。结果表明，相同载荷下，最大von-Mises应力出现在屈曲100°位置，股骨软骨应力增幅达71.25%，髌骨软骨增大29.36%；随着骑行屈曲角度的增加，胫股关节高应力区逐渐向膝关节后部转移，髌股关节软骨受力逐渐上移。骑行时高应力发生在膝关节屈曲角度较大位置，胫骨平台软骨后侧、髌骨软骨上侧承受更大应力。

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	马雪梅¹张春秋^1*高丽兰¹叶金铎¹张西正²

关键词 ：膝关节, 软骨, 骑行, 有限元模型, 屈曲

Key words： knee joint cartilage riding finite element model flexion

基金资助:国家自然科学基金重点项目（11432016）；国家自然科学基金（11172208，11402171）

引用本文:

马雪梅¹张春秋^1*高丽兰¹叶金铎¹张西正². 骑行时不同屈曲角度膝关节软骨受力分析[J]. 中国生物医学工程学报, 2016, 35(1): 119-123.
Ma Xuemei¹ Zhang Chunqiu^1*Gao Lilan¹ Ye Jinduo¹Zhang Xizheng^2
. The Analysis of Stress on Knee Cartilage in Different Flexion Angles During Riding. journal1, 2016, 35(1): 119-123.

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http://cjbme.csbme.org/CN/10.3969/j.issn.0258-8021. 2016. 01.015 或 http://cjbme.csbme.org/CN/Y2016/V35/I1/119

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