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李 飞,徐澍民,陈荷娟. 髋臼周围截骨术中球面软骨层的动步态接触数值模拟[J]. 科学技术与工程, 2020, 20(35): 14385-14391.
Fei Li.Study on Numerical Contact Simulation Of Spherical Cartilage Layer under Dynamic Gait at Periacetabular Osteotomy[J].Science Technology and Engineering,2020,20(35):14385-14391.
髋臼周围截骨术中球面软骨层的动步态接触数值模拟
Study on Numerical Contact Simulation Of Spherical Cartilage Layer under Dynamic Gait at Periacetabular Osteotomy
投稿时间:2019-11-01  修订日期:2020-08-27
DOI:
中文关键词:  髋臼周围截骨术  球面软骨层  数值模拟  接触分析  接触压力
英文关键词:Periacetabular  osteotomy, Spherical  cartilage layer, Numerical  simulation, Contact  analysis, Contact  pressure.
基金项目:
        
作者单位
李 飞 南京理工大学机械工程学院
徐澍民 南京理工大学机械工程学院
陈荷娟 南京理工大学机械工程学院
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中文摘要:
      数值分析已应用于髋臼周围截骨术的模拟中,以 模拟增生性髋关节接触应力集中的改善。由于很难从CT或MRI图像中分割软骨层,因此假定髋关节模型为简单的完美球窝形关节。本研究的目的是通过数值模拟接触分析来阐明球面软骨层建模方法,模拟髋臼周围截骨术中动步态的软骨层接触压力和接触面积。并通过旋转截骨段模拟髋臼周围截骨术。数值模拟结果表明,在球面软骨层模型中观察到相对连续的接触压力分布和较低的峰值接触压力,球面软骨层建模方法能合理的反映软骨层接触压力。髋臼周围截骨术后能明显的改善软骨层接触压力分布,从而为髋臼周围截骨术提供生物力学参考数据。
英文摘要:
      Numerical analysis has been applied to the simulation of periacetabular osteotomy (PAO) to simulate the improvement of stress concentration in dysplastic hip joint. Since it is difficult to split cartilage layers from CT or MRI images, it is assumed that the hip model is a simple perfect spherical joint. The purpose of this study is to clarify the modeling method of spherical cartilage layer through numerical simulation contact analysis, and to predict the contact pressure and area of the cartilage layer under the dynamic gait on the acetabular osteotomy. And the acetabular osteotomy is simulated by rotating the osteotomy segment. The numerical simulation results show that the relatively continuous contact pressure distribution and the lower peak contact pressure are observed in the spherical cartilage layer model. The spherical cartilage layer modeling method can reasonably reflect the contact pressure of the cartilage layer. The contact pressure distribution of cartilage layer can be obviously improved after the amputation of the hip part, thus providing biomechanical reference data for the PAO.
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