旋转手法对颈椎髓核内压力影响的比较研究

An experimental study on effect of cervical rotatory manipulations to the pressure of cervical nucleus pulposus

目的：比较临床上几种常用的颈部旋转手法对颈椎髓核内压力的影响。方法：用生物材料实验机对新鲜尸体颈椎标本进行定量旋转和牵引。实验状态分为：Ａ状态：先以不同重量的牵引，再旋转颈椎；Ｂ状态：先旋转颈椎，再以不同的重量牵引；Ｃ状态：牵引和旋转同时进行。结果：髓核内压力随着牵引力的增加而下降，旋转时有轻度升高；在复位过程中压力出现一过性地下降。在Ａ状态以２００Ｎ的力牵引时，髓核内压力下降最明显；Ｂ状态下旋转时髓核内压力有轻度升高，牵引后有轻度下降；Ｃ状态基本对髓核内压力无影响。结论：在Ａ状态下行颈椎旋转手法最安全。

Objective: to study on the effect of traction combined with rotatory manipulation on the pressure of cadaveric cervical nucleus pulposus. Methods: The cervical spine was tracted and rotated by material test system(MTS), in different states and pressure of cervical nucleus pulposus of C 3～4 ,C 4～5 and C 5～6 were measured respectively with pressure sensor . State A: under different tracting forces, and then rotated the cervical spine; State B: at first rotated the cervical spine, then tracted it; State C: tracted the cervical spine and rotated the cervical spine at the same time. Results:①Along with the tracted force increased, the pressure of cervical nucleus pulposus fell continuously, and the pressure increased slightly when rotated the specimen.②The felling remained a certain period of time when the state of cervical spine was restored.③In state A, the pressure fell down obviously and increased slightly under 200N tracting force, and the specimen was then rotated; In state B, the pressure increased in a certain extent firstly, and then fell down slightly; In state C, the pressure basically had no change. Conclusion: The rotatory manipulation under traction is the safest rotatory manipulation of cervical spine.