中国临床解剖学杂志 ›› 2013, Vol. 31 ›› Issue (1): 100-103.

• 临床生物力学 • 上一篇    下一篇

股骨头钻孔减压孔径对股骨颈生物力学影响的实验研究

何国忠1, 庞清江1, 陈先军1, 余霄1, 赵卫东2   

  1. 1.宁波大学医学院附属宁波市第二医院骨科中心,  浙江   宁波    315010;
    2.南方医科大学解剖学教研室,  广州   510515
  • 收稿日期:2012-07-25 发布日期:2013-01-29
  • 通讯作者: 庞清江,教授,硕士生导师,E-mail: pqjey@sina.com E-mail:heguozhongnb@sina.com
  • 作者简介:何国忠(1979-),男,浙江衢州人,硕士在读,研究方向:骨关节外科
  • 基金资助:

    宁波市医学科技计划项目(2010B04)

Effects of different tunnel sizes of femoral head core decompression on femoral neck biomechanics

HE Guo-zhong1,PANG Qing-jiang1,CHEN Xian-jun1,YU Xiao1, ZHAO Wei-dong2   

  1. 1. Department of Orthopaedics, Ningbo No. 2 Hospital, Medical School of Ningbo University, Ningbo 315010,China;  2.Department of Anatomy, Southern Medical University , Guangzhou 510515,China
  • Received:2012-07-25 Published:2013-01-29

摘要:

目的 观察经转子间股骨头减压钻孔的孔径对股骨颈生物力学的影响。 方法    取新鲜尸体股骨标本24具, 随机分成4组:正常组、单孔减压组(D=10 mm)、双孔减压组(D=7 mm)和3孔减压组 (D=7 mm)。在股骨颈主张力侧、主压力侧和小转子处各选择1点作为应变测试点,检测4组标本在,0~1200 N分级载荷下各测点的应变。  结果 在股骨颈主张力侧和主压力侧的测试点中,单孔减压组、双孔减压组和3孔减压组的应变值均大于正常组,其中双孔减压组的应变值在三组钻孔组间最小,并且与其它组间相比差异具有显著性(P<0.05)。  结论 经转子间股骨头钻孔减压明显影响股骨颈生物力学性能,与单纯大孔钻孔面积相同的2小孔钻孔减压对股骨颈生物力学性能影响较小。

关键词: 股骨颈, 钻孔减压, 应变, 生物力学

Abstract:

Objective To observe the effects of different tunnel sizes of the femoral head core decompression on femoral neck biomechanics. Methods 24 fresh cadaver femur specimens were randomly divided into four groups: a normal group, a single-tunnel core decompression group (D=10 mm), a 2-tunnel core decompression group (D=7mm) and a 3- tunnel core decompression group (D=7mm). 3 points in main tension side, main pressure side and the lesser trochanter were chosen as the test points of strain from 0N to 1200N load. Results The strain of the 2-tunnel group was the lowest among the normal group, the single-tunnel group, 2-tunnel group and 3-tunnel group; furthermore, the strain values of all of the 3 core decompression groups were larger than that in the normal group in tension side and the pressure side. Conclusions There is a significant effect on the femoral neck biomechanics by femoral head core decompression. The 2-tunnel (D= 7mm) with the lowest strain value may be the best choice to femoral head core decompression.

Key words: Femoral neck, Core decompression, Strain, Biomechanics

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