Maigne J Y, Guillon F
Department of Physical Medicine, Hôtel-Dieu University, Paris.
J Manipulative Physiol Ther. 2000 Oct;23(8):531-5. doi: 10.1067/mmt.2000.109679.
To demonstrate relative movement of the vertebrae and variations in intradiskal pressure during 2 different lumbar spinal manipulations, in flexion or extension, in 2 unembalmed cadavers.
A pressure sensor was inserted into the L3-4 disk in cadaver 1 and into the L1-2 to L4-5 disks in cadaver 2. Two adjacent vertebrae (L3 and L4 in cadaver 1, and L4 and L5 in cadaver 2) were each equipped with 2 monoaxial accelerometers to record acceleration in the caudocranial axis and a biaxial accelerometer to record acceleration in the "horizontal" anatomic plane.
Laboratory study.
During the thrust, relative intervertebral movements were demonstrated; movements differed with the type of manipulation (in flexion or extension). Intradiskal pressure initially increased, then decreased.
Lumbar spinal manipulations have a biomechanical effect on the intervertebral disks, producing a brief but marked change in intradiskal pressure. This effect, which differs slightly with the different types of manipulation studied, is the consequence of movements of the adjacent vertebrae.
在2具未防腐处理的尸体上，演示两种不同的腰椎手法操作（屈曲或伸展）过程中椎体的相对运动和椎间盘内压力的变化。
在尸体1的L3 - 4椎间盘插入压力传感器，在尸体2的L1 - 2至L4 - 5椎间盘插入压力传感器。两具尸体中相邻的两个椎体（尸体1中的L3和L4，尸体2中的L4和L5）分别配备2个单轴加速度计以记录尾颅轴方向的加速度，以及1个双轴加速度计以记录“水平”解剖平面的加速度。
实验室研究。
在推压过程中，显示出相对椎间运动；运动因手法操作类型（屈曲或伸展）而异。椎间盘内压力最初升高，然后降低。
腰椎手法操作对椎间盘有生物力学效应，导致椎间盘内压力发生短暂但显著的变化。这种效应在不同类型的手法操作中略有不同，是相邻椎体运动的结果。
