| 正常步态下髋臼底接触面积与压力分布的三维有限元分析 |
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| 引用本文： | 汪光晔,张春才,许硕贵. 正常步态下髋臼底接触面积与压力分布的三维有限元分析[J]. 中国组织工程研究与临床康复, 2011, 15(22): 3991-3994. DOI: 10.3969/j.issn.1673-8225.2011.22.001 |
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| 作者姓名： | 汪光晔 张春才 许硕贵 |
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| 作者单位： | 1. 芜湖市第二人民医院骨三科,安徽省芜湖市,241000
2. 解放军第二军医大学长海医院骨科,上海市,200433 |
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| 基金项目： | 上海科学技术委员会科研计划项目 |
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| 摘 要： | 背景:认识髋关节的正常压力分布特点,将有助于进一步了解正常髋关节的力学机制与异常载荷下关节软骨的病理学行为。目的:运用三维有限元的方法,分析正常步态过程中头臼间接触面积和应力分布情况。方法:应用CT扫描技术和计算机图像处理系统,建立髋臼的三维有限元模型,利用髋臼模型模拟髋臼在完整步态过程中连续32个位相时的受力状况,并对各位相时接触面积进行计算。结果与结论:获得了髋臼在32个位相时的应力峰值分布呈双峰形,在起步位相时达到峰值(4.2MPa),支撑期接触面积明显高于跨步期。始终接触部位集中在髋臼顶部,偏内侧,而髋臼前角与后角始终没有应力传导。髋臼软骨在不同位相的应力分布明显不同,支撑期应力增高区分布在臼顶区,而跨步期应力增高区在臼软骨的内侧缘。结果显示髋臼的接触应力增高区及接触面的分布对临床研究有重要意义,可提示导致髋臼骨性关节炎的好发因素。
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| 关 键 词： | 髋臼接触面积 接触压 三维有限元 髋关节磨损 生物力学 |
Three-dimensional finite analysis of hip contact area and contact pressure during normal walking |
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| Wang Guang-Ye,Zhang Chun-Cai,Xu Shuo-gui. Three-dimensional finite analysis of hip contact area and contact pressure during normal walking[J]. Journal of Clinical Rehabilitative Tissue Engineering Research, 2011, 15(22): 3991-3994. DOI: 10.3969/j.issn.1673-8225.2011.22.001 |
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| Authors: | Wang Guang-Ye Zhang Chun-Cai Xu Shuo-gui |
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| Affiliation: | Wang Guang-Ye1,Zhang Chun-Cai2,Xu Shuo-gui21Department of Orthopaedics,Wuhu No.2 People's Hospital,Wuhu 241000,Anhui Province,China,2Department of Orthopedics,Changhai Hospital,Second Military Medical University of Chinese PLA,Shanghai 200433 |
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| Abstract: | BACKGROUND:Estimation of the hip joint contact area and pressure distribution during activities of daily living is important in predicting joint degeneration mechanism,prosthetic implant wear,providing biomechanical rationales for preoperative planning and postoperative rehabilitation.OBJECTIVE:To explore the hip joint contact area and pressure distribution during different trait phases,which is important in predicting joint degeneration mechanism.METHODS:CT scanning and computer image processing system wer... |
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