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In vivo finite element modeling and mechanical analysis of artificial hip joint
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- Author:
- No author available
- Issue:
- 26
- DOI:
- 10.3969/j.issn.1673-8225.2012.26.005
- Key Word:
- 髋关节;活体;CT;有限元;应力;生物力学;数字化骨科
Abstract： 背景:有限元分析最为广泛地应用于人工髋关节置换的研究,能够反映人工髋关节置换前后的应力分布情况.目的:通过CT扫描图像建立人工髋关节置换后的三维有限元模型,分析假体和股骨的力学分布,提供研究活体内假体的评估方法.方法:选非水泥型人工髋关节假体置换后患者1例,64排CT扫描髋关节,通过三维建模软件建立三维有限元模型,加载载荷1 500 N,分析假体和股骨的应力分布,并与体外建模和正常股骨有限元模型比较.结果与结论:应用患者人工髋关节置换后CT扫描图像建立的三维有限元模型,加载后应力主要分布在股骨干上端1/3处,在股骨假体柄颈结合处,假体外侧,假体的远端与股骨接触处,是假体置换后应力在体内传递的真实反映.结果说明活体髋关节建模优于体外建模,不改变假体在体内的位置,人工髋关节活体建模是假体评估新方法.
- [1]郭子学,侯丽丽,赵峰,等.不同截面股骨假体置换后假体与股骨应力的有限元分析[J].2010,(11).
- [2]尚鹏,王建平,王成焘.完整步态下人工髋关节微动的非线性有限元分析[J].2008,(4).
- [3]张弿,张清功,马信龙,等.应用CT断层图像重建股骨有限元模型[J].2008,(6).
- [4]巩慧明,侯亮,叶桂峰.髋关节置换的三维有限元分析[J].2008,(5).
- [5]俞能宝,董天华,孙俊英.复合材料股骨头假体三维有限元分析[J].2001,(3).
- [6]Matsumoto T,Matsuyama J,Bessho M,etc.Prediction of strength and strain of the proximal femur by a CT-based finite element method.[J].2007,40(8).
- [7]Kowalczyk P.Design optimization of cementless femoral hip prostheses using finite element analysis.[J].2001,123(5).
- [8]Testi D,Viceconti M,Zannoni C,etc.An automated method to position prosthetic components within multiple anatomical spaces.[J].2003,70(2).
- [9]Cinzia Zannoni,Marco Viceconti,Luisa Pierotti,etc.Analysis of titanium induced CT artifacts in the development of biomechanical finite element models[J].1998,20(9).
- [10]Langston GD,Mahfouz MR,Komistek RD,etc.In vivo assessment of total hip femoral head separation from the acetabular cup during 4 common daily activities.[J].2011,34(6).
- [11]Santare MH.,Joshi MG.,Miller F.,etc.Analysis of a femoral hip prosthesis designed to reduce stress shielding[J].2000,33(12).
- [12]Gross S,Abel EW.A finite element analysis of hollow stemmed hip prostheses as a means of reducing stress shielding of the femur.[J].2001,34(8).
- [13]Pandorf T,Radermacher K,Wirtz DC,etc.Concept and development of an orthotropic FE model of the proximal femur.[J].2003,36(2).
- [14]Klabunde R,Hansen U,Amis A,etc.Finite element modelling of primary hip stem stability: The effect of interference fit.[J].2008,41(3).
- [15]G. Isaacs,M. Taylor,A. S. Wong,etc.Effect of bone material properties on the initial stability of a cementless hip stem: a finite element study[J].2005,219(h4).
- [16]Perez MA,Palacios J.Comparative finite element analysis of the debonding process in different concepts of cemented hip implants.[J].2010,38(6).