牵扳手法对腰椎髓核内压力影响的实验研究

目的：为腰椎牵扳手法的临床应用提供实验学依据。方法：应用生物材料实验机和压力传感器对新鲜尸体腰椎的髓核内压力进行定量化的测量。结果：单纯地旋转腰椎，L4-5髓核内压力可明显地升高，而L5-S1无明显改变；当以牵引力向上拔伸腰椎时，所测节段的髓核内压力均明显地降低（P＜0.05)。旋转时，髓核内压力又明显地升高（P＜0.05)。但仍明显地低于正常状态下的髓核内压力（P＜0.05)。结论：腰椎牵扳手法对髓核内压力有明显地影响，在牵扳过程中髓核内压力始终保持较低压力，因而较为安全。

The Eeffect of Traction-Rotatory Manipulation on the Pressure of Lumbar Nucleus Pulposus

Objective:To provide experimental data for clinical applying of the traction rotatory manipulation of lumbar spine.Methods:With the Material Testing System (MTS) and pressure sensor,the pressures of nucleus pulposus were measured to fix the quantity and recorded during the manipulation on six lumbar spines of fresh cadaver.Results:Compared with normal status,the pressure of L4 5 nucleus pulposus during rotatory was increase significantly (P<0.05) and L5 S1has no difference (P>0.05);the pressures of L4 5 and L5 S1fell obviously under the status with traction pull (P<0.05).The pressure increased significantly (P<0.05) again when the rotatory manipulation was applied.However it still lower obviously than the pressure in normal status (P<0.05).Conclusion:The traction pull manipulation has significantly effect onm the pressure of nucleus pulposus of Lumbar spine.The status of lower pressure was maintained during the manipulation,some manipulative damages by simply rotatory manipulations can be avoid.