Panjabi M M
Orthop Clin North Am. 1977 Jan;8(1):169-80.
The mechanical behavior of the human spine is complex. Most of the studies in the past have predominantly dealt with axial compression. Some attempts have been made to study spinal behavior resulting from the application of other types of loads. However, coupled motions have not been documented. In the present discussion we have attempted to develop a system that makes it possible to determine the complete elastic behavior of the spine and to present some results of three dimensional studies, including the coupling effects. Some of the conclusions are as follows: 1. The mechanical behavior of the spinal motion segments can be documented by application of 12 physiologic loads to the upper vertebra and measuring the resulting six components of the three dimensional motion. 2. Each physiologic load (a force or a moment) produces one main motion and five coupled motions. 3. Seventy-two load displacement curves are required for a complete description of the elastic behavior of a single motion segment.
人类脊柱的力学行为很复杂。过去的大多数研究主要涉及轴向压缩。已经有人尝试研究由其他类型载荷作用引起的脊柱行为。然而，耦合运动尚未被记录。在当前的讨论中，我们试图开发一种系统，该系统能够确定脊柱的完整弹性行为，并展示三维研究的一些结果，包括耦合效应。一些结论如下：1. 通过对上位椎体施加12种生理载荷并测量由此产生的三维运动的六个分量，可以记录脊柱运动节段的力学行为。2. 每种生理载荷（一个力或一个力矩）会产生一个主运动和五个耦合运动。3. 要完整描述单个运动节段的弹性行为，需要72条载荷-位移曲线。
