[1]邬培慧,傅明,康焱,等.髋臼CE角及关节作用力方向的生物力学作用[J].第三军医大学学报,2011,33(11):1174-1177.
 Wu Peihui,Fu Ming,Kang Yan,et al.Biomechanics of acetabular CE angle and direction of hip joint acting force[J].J Third Mil Med Univ,2011,33(11):1174-1177.
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《第三军医大学学报》[ISSN:1000-5404/CN:51-1095/R]

卷:
33卷
期数:
2011年第11期
页码:
1174-1177
栏目:
论著
出版日期:
2011-06-15

文章信息/Info

Title:
Biomechanics of acetabular CE angle and direction of hip joint acting force
作者:
邬培慧傅明康焱张志奇杨子波廖威明
中山大学附属第一医院关节外科
Author(s):
Wu Peihui Fu Ming Kang Yan Zhang Zhiqi Yang Zibo Liao Weiming
Department of Joint Surgery, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong Province, 510080, China
关键词:
髋关节中心边缘角关节作用力生物力学有限元分析
Keywords:
hip jointCenter-edge anglejoint acting forcebiomechanicsfinite-element analysis
分类号:
R318.01;R322.72
文献标志码:
A
摘要:
目的    探讨髋臼CE角及关节作用力方向对髋关节生物力学的影响。      方法      基于髋关节CT扫描图像,利用计算机辅助设计技术,建立一系列不同CE角的髋关节三维有限元模型,通过股骨头中心施加7种不同大小及方向的关节作用力,应用有限元非线性面-面接触分析方法,研究髋臼关节软骨内应力大小和分布情况以及股骨头位移。     结果      当CE角减小时,髋臼软骨应力峰值平均值逐渐由1.70 MPa增大至7.89 MPa,应力分布区域面积逐渐减小,股骨头向关节外位移距离由0.04 mm增大至2.88 mm;对于CE角较小的髋关节,关节作用力方向趋向人体纵轴时,可不同程度增大髋臼软骨内应力峰值及股骨头位移距离。      结论      髋关节CE角以及关节作用力方向是影响髋关节生物力学的两个重要因素。
Abstract:
Objective      To study the effect of acetabular Center-edge (CE) angle and joint acting force direction on biomechanics of hip joint.     Methods      Three-dimensional hip joint models with different acetabular CE angles were established using computer-aided design (CAD) techniques according to the CT-scan images. Seven joint acting forces were loaded on the hip joint through the center of femur head from different directions. Stress on acetabular cartilage and displacement of femur head were studied by finite-element non-linear analysis.     Results      The average peak stress on acetabular cartilage increased to 7.89 MPa from 1.70 MPa, the distribution area of stress decreased gradually, and the distance from femur head displacement to the extra-hip joint increased to 2.88 mm from 0.04 mm when the acetabular CE angle was small. The vertical direction of joint acting force on hip joint with a smaller CE angle increased the peak stress on acetabular cartilage and the distance of femur head displacement.     Conclusion      CE angle and vertical acting force are the two important factors influencing the mechanics of hip joint.

参考文献/References:

邬培慧, 傅明, 康焱, 等. 髋臼CE角及关节作用力方向的生物力学作用[J].第三军医大学学报,2011,33(11):1174-1177.

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更新日期/Last Update: 2011-05-23