...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Biomechanics >Finite element analysis of moment-rotation relationships for human cervical spine.
【24h】

Finite element analysis of moment-rotation relationships for human cervical spine.

机译：人体颈椎力矩-旋转关系的有限元分析。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A comprehensive, geometrically accurate, nonlinear C0-C7 FE model of head and cervical spine based on the actual geometry of a human cadaver specimen was developed. The motions of each cervical vertebral level under pure moment loading of 1.0 Nm applied incrementally on the skull to simulate the movements of the head and cervical spine under flexion, tension, axial rotation and lateral bending with the inferior surface of the C7 vertebral body fully constrained were analysed. The predicted range of motion (ROM) for each motion segment were computed and compared with published experimental data. The model predicted the nonlinear moment-rotation relationship of human cervical spine. Under the same loading magnitude, the model predicted the largest rotation in extension, followed by flexion and axial rotation, and least ROM in lateral bending. The upper cervical spines are more flexible than the lower cervical levels. The motions of the two uppermost motion segments account for half (or even higher) of the whole cervical spine motion under rotational loadings. The differences in the ROMs among the lower cervical spines (C3-C7) were relatively small. The FE predicted segmental motions effectively reflect the behavior of human cervical spine and were in agreement with the experimental data. The C0-C7 FE model offers potentials for biomedical and injury studies.
机译：根据人体尸体标本的实际几何形状，开发了一个全面的，几何精确的非线性C0-C7头颈椎非线性FE模型。在1.0 Nm的纯弯矩载荷下，每个颈椎水平骨的运动逐渐施加在头骨上，以模拟在完全约束C7椎体下表面的情况下在弯曲，拉伸，轴向旋转和侧向弯曲下头部和颈椎的运动被分析。计算每个运动段的预测运动范围（ROM），并将其与已发布的实验数据进行比较。该模型预测了人颈椎的非线性力矩-旋转关系。在相同的载荷大小下，该模型预测伸展时旋转最大，然后弯曲和轴向旋转，而横向弯曲时ROM最小。上颈椎比下颈椎更有弹性。在旋转载荷下，两个最上面的运动段的运动占整个颈椎运动的一半（甚至更高）。下颈椎（C3-C7）之间的ROM差异相对较小。 FE预测的节段运动有效地反映了人类颈椎的行为，并与实验数据相符。 C0-C7有限元模型为生物医学和损伤研究提供了潜力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号