腰后关节紊乱症的病机和手法治疗生物力学研究

Study on pathogenesis of derangement of lumbar posterior intervertebral facet joint and biomechanics of manipulative treatment

用微型传感器埋入法，测定腰椎后关节在不同姿势下的位移和受力情况，结果表明：其位移程度和方向受关节突形态的影响，脊柱活动时关节内压力集中在小关节的上端和下端，当某段关节失稳时，较邻近的小关节内压力增大８倍左右。对模拟旋转手法测定表明：后关节内压力呈波浪状变化，其下关节突出现向上→前→下→后的全方位移动。作者从生物力学的角度对腰后关节紊乱症的病机和手法治疗原理进行了探讨。

A microsensor was embedded to detect the displacement and receiving forces from lumbar posterior intervertebral facet joints with various postures.The results indicates that the degree and direction of displacement is influenced by morphology of the articular process,during motion of the spine,the intra-pressure of facet joints is concentrated on the superior and inferior ends of the facet joint.During instability of certain segment of the joint,there will be an increasing of around 8 times of intra-pressure within the facet joints.Results of measurement of mimic rotatory manipulative reduction indicate that there are undulant changes within the intra -pressure of posterior facet joints.All-round direction movements of the inferior facet joint toward upward- forward- downward- backward have been found.Based on the viewpoint of bio- mechanics,the pathogenesis of derangement of lumbar posterior intervertebral facet joint and principle of manipulative treatment are explorated by authors.