中国组织工程研究

中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (17): 3052-3055.doi: 10.3969/j.issn.1673-8225.2012.17.004

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

步幅大小及髋关节外展角度对坏死股骨头影响的三维有限元分析*★

田丰德，赵德伟，郭  林，杨  磊，陈秉智   

  1. 大连大学附属中山医院骨科，辽宁省大连市 116001
  • 收稿日期:2011-09-21 修回日期:2011-11-29 出版日期:2012-04-22 发布日期:2012-04-22
  • 通讯作者: 赵德伟，大连大学附属中山医院骨科，辽宁省大连市 116001 tianfengde@163.com
  • 作者简介:田丰德★，男，1977年生，辽宁省沈阳市人，汉族，2007年遵义医学院毕业，硕士，主治医师，主要从事关节外科、生物力学、数字骨科的研究。
  • 基金资助:

    国家自然科学基金资助项目“股骨头再造、关节软骨化生的实验研究及三维有限元分析”(30670542)。

Influence of step width and abduction angle on necrotic femur head by three-dimensional finite element method 

Tian Feng-de, Zhao De-wei, Guo Lin, Yang Lei, Chen Bing-zhi   

  1. Department of Orthopedics, Affiliated Zhongshan Hospital of Dalian University, Dalian  116001, Liaoning Province, China
  • Received:2011-09-21 Revised:2011-11-29 Online:2012-04-22 Published:2012-04-22
  • Contact: Zhao De-wei, Department of Orthopedics, Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, Liaoning Province, China tianfengde@163.com
  • About author:Tian Feng-de★, Master, Attending physician, Department of Orthopedics, Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, Liaoning Province, China
  • Supported by:

     the National Natural Science Foundation of China, No. 30670542*

PDF

186

被引次数

6

摘要：

背景：目前对于日常生活中步幅及髋关节外展角度大小是否会对坏死股骨头影响认识不多，也缺乏相关的实验研究。
目的：应用三维有限元方法分析步幅大小及髋关节外展角度对坏死股骨头应力分布的影响。
方法：选取1例男性ARCO Ⅱ期股骨头坏死患者行股骨近段螺旋CT扫描，应用专业医学建模软件MIMICS及HYPERMESH建立三维有限元模型。设置边界条件和加载条件，应用有限元分析软件ANSYS执行计算。
结果与结论：随着步幅的加大(0~60°)，外展角度增加(0~10°)，股骨近段应力分布改变最大应力值逐渐增大，提示步幅及髋关节外展角度的大小能够影响股骨头应力分布，股骨头坏死患者日常治疗生活及功能练习时应减小步幅及外展角。
关键词：步幅；股骨头坏死；三维；有限元；外展角
doi:10.3969/j.issn.1673-8225.2012.17.004

关键词: 步幅, 股骨头坏死, 三维, 有限元, 外展角

Abstract:

BACKGROUND: Now, effects of step width and abduction angle of hip joint in daily life on necrotic femur head are not well known, and related experimental studies are few.
OBJECTIVE: To study the influence of step width and abduction angle on necrotic femur head with three-dimensional finite element method.
METHODS: One male patient who suffered avascular necrosis of femoral head with his right femoral (ARCO II) were treated with spiral CT scan at the proximal femur. Three-dimensional finite element models were established by professional medical modeling software (MIMICS and HYPERMESH). Boundary conditions and loading conditions were set. Finite element analysis software ANSYS was used to perform calculations.
RESULTS AND CONCLUSION: Along with increase of step width (0-60°) and abduction angel (0-10°), the value of maximum stress distributed on the necrotic femoral head increased. It is indicated that step width and abduction angle can affect stress distribution on the necrotic femur head, patients should reduce step width and abduction angle during the treatment and rehabilitation.

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