不同推拿手法下腰椎小关节应力变化的观察

目的：应用生物力学方法，研究不同腰部推拿手法时腰椎小关节应力变化。方法：将标本固定于生物材料实验机，应用计算机定量控制，模拟3种推拿手法治疗时的状态（（1）斜扳手法；不加任何荷载3腰椎单位 单纯旋转15度；（2）坐位旋转手法：腰椎纵向压力400N，前屈15度，3腰椎单位单纯进行旋转15度，（3）牵皈手法：腰椎前屈15度，纵向牵引400N，3腰椎单位单纯旋转15度），应用压敏片测量小关节的应力，结果：模拟三种手法时腰椎小关节内应力差异无显著性，不至发生关节内骨折，结论：在此旋转角度下，手法是安全的。

An observation on stress for lumbar manipulations

Objective:To study the changes of stress on lumbar facet joint in different lumbar manipulations by biomechanical method.Method: Cadaver lumbar spines were loaded on a material test system, and applied to a computer quantitative control to simulate three kinds of manipulations and measured stress on lumbar facet joint by sensitive film.Result:There was no significant difference for stress on lumbar facet joint in simulating three manipulations .The stress of lumbar facet were lower than the limitation of lumbar facet fracture.Conclusion:The manipulations are safe within certain rotation angle.