东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2006, Vol. 27 ›› Issue (12): 1311-1314.DOI: -

• 论著 • 上一篇    下一篇

振动载荷对损伤椎间盘处小关节的影响分析

郭立新;黄秋野;宋桂秋;许之伟;   

  1. 东北大学信息科学与工程学院;东北大学信息科学与工程学院;东北大学机械工程与自动化学院;东北大学机械工程与自动化学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2006-12-15 发布日期:2013-06-23
  • 通讯作者: Guo, L.-X.
  • 作者简介:-
  • 基金资助:
    教育部留学回国人员科研启动基金资助项目;;

Influence of vibratory loads on the facet joints near injured intervertebral discs

Guo, Li-Xin (1); Huang, Qiu-Ye (1); Song, Gui-Qiu (2); Xu, Zhi-Wei (2)   

  1. (1) School of Information Science and Engineering, Northeastern University, Shenyang 110004, China; (2) School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2006-12-15 Published:2013-06-23
  • Contact: Guo, L.-X.
  • About author:-
  • Supported by:
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摘要： 利用非线性的三维脊椎有限元模型,研究了振动环境下损伤脊椎的力学特性.脊椎的损伤包括椎间盘的去髓核和小关节切除,仿真过程还考虑了不同频率和阻尼对脊椎动态特性的影响.研究表明在振动环境中,人体腰椎不仅存在垂直方向上的振动,还伴随着小幅度的前后仰俯运动.椎间盘的去核与退化将使小关节的接触力增加,在振动情况下对小关节非常不利.另外,振动对椎体后部小关节的影响比同一运动段的其他部位都大.

关键词: 脊椎, 有限元分析, 椎间盘, 小关节接触力, 全身振动

Abstract: A nonlinear three-dimensional finite element model of human spine was used to investigate the biomechanical characteristics of injured spine in vibratory environment. The injury status of the spine includes the denucleation of intervertebral discs and facetectomy, and the influences of different frequencies and damping on the dynamic characteristics of human spine were also taken into account in simulation. The analytical results indicated that, under whole body vibration, the lumbar spine exhibits not only the vertical vibration but also the flexion-extension motion with small amplitude. The denucleation and degeneration of intervertebral discs might increase the facet contact force and it is quite disadvantage to the facet joints under vibration conditions. Moreover, the influence of vibration on the facet joints of lumbar spine is higher than other regions at the same motion segment.

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