中国组织工程研究

中国组织工程研究 ›› 2011, Vol. 15 ›› Issue (48): 8935-8938.doi: 10.3969/j.issn.1673-8225.2011.48.002

• 数字化骨科 digital orthopedics • 上一篇    下一篇

模拟腰部推拿手法建立“腰-盆-髋”有限元模型

胡  华1，熊昌源2，韩国武3   

  1. 1湖北中医药大学2010级博士，湖北省武汉市 430065
    2湖北省中医院骨伤科，湖北省武汉市 430061
    3湖北省兴山县人民医院放射科，湖北省兴山县  443700
  • 收稿日期:2011-08-09 修回日期:2011-09-13 出版日期:2011-11-26 发布日期:2011-11-26
  • 通讯作者: 熊昌源，教授，主任医师，湖北省中医院骨科，湖北省武汉市 430061
  • 作者简介:胡华☆，男，1976年生，湖北宜昌兴山县人，汉族，2010年湖北中医药大学在读博士，主治医师，主要从事骨与关节伤病研究。 888huhua@163.com

Construction of a three-dimensional finite element model of “lumber-pelvic-hip” to simulate lumbar massage technique

Hu Hua1, Xiong Chang-yuan2, Han Guo-wu3   

  1. 1Hubei University of Traditional Chinese Medicine, Wuhan  430065, Hubei Province, China
    2Department of Traumatic Orthopedics, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan  430061, Hubei Province, China
    3Department of Radiology, People’s Hospital of Xingshan County, Xingshan  443700, Hubei Province, China
  • Received:2011-08-09 Revised:2011-09-13 Online:2011-11-26 Published:2011-11-26
  • Contact: Xiong Chang-yuan, Professor, Chief physician, Department of Traumatic Orthopedics, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan 430061, Hubei Province, China
  • About author:Hu Hua☆, Studying for doctorate, Attending physician, Hubei University of Traditional Chinese Medicine, Wuhan 430065, Hubei Province, China 888huhua@163.com

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摘要：

背景：对局部椎体或整个脊柱进行推拿手法的有限元分析具有一定的局限性。
目的：通过建立“腰-盆-髋”有限元模型对腰部推拿手法进行相关生物力学分析。
方法：利用螺旋CT 数据通过Mimics 10.01 建立具有高度几何相似性的腰椎、骨盆和股骨近端复合体骨骼的面模型，利用geomagic9精修模型，在hypermesh10.0中划分网格，添加椎间盘和主要韧带。并对有限元模型各部件进行材料属性赋值。利用有限元分析软件模拟腰椎推拿手法三工况加载，计算特征部位位移、最大应变及应力。
结果与结论：有限元模型在三工况载荷下的特征部位应力、应变值基本能够反映“腰-盆-髋”特有的力学结构特性，模型的仿真性较好。在近似的几何外形下，据生物力学资料报道的材料赋值建模保证了有限元模型计算的正确性；模拟接近生理状况下的边界及载荷条件进行计算可以确保结果的准确性。

关键词: 腰-盆-髋, 三维重建, 有限元法, 推拿, 数字化骨科

Abstract:

BACKGROUND: The finite element analysis of partial vertebral or entire vertebral massage technique has its limitation.
OBJECTIVE: To build an infinite element model of “lumber-pelvic-hip” to research the biomechanical mechanism of lumbar massage.
METHODS: Surface models of the lumbar, pelvis and proximal femur bone complex with high geometric similarity were constructed by Mimics 10.01 through importing subject-specific spiral CT data. Then, the models were modified though geomagic9 software, and solid modeling was converted from triangular based surface model by hypermesh10.0 software to add intervertebral disc and ligaments. According to the relevant literature on the finite element model, material properties were assigned for each component. Three loading conditions were used to simulate lumbar massage technique in finite element analysis software Abaqus6.5 software. Finally, the displacement, von-Misses stress and strains of specific location in the “lumber-pelvic-hip” infinite models were calculated by computer.
RESULTS AND CONCLUSION: The displacement, von Misses stress and strains of specific location in the model under the three conditions could reflect the biomechanical characteristics of the lumber-pelvic-hip, implying the accuracy of the finite element model. Geometric similarity is essential for a finite element model, and subject-specific material assignment according to reported biomechanical data can ensure the accuracy of the model. Both loads and boundary conditions approximation to physiologically environment in the finite element models ensure the accuracy of results.

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