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机构地区:[1]中国中医研究院骨伤科研究所
出 处:《中国骨伤》1994年第5期7-9,共3页China Journal of Orthopaedics and Traumatology
摘 要:采用模拟手法对3具新鲜尸体的脊柱标本,进行了L4.5、L5S1椎间盘后外缘应力变化的测定,和脊柱不同位置变化下腰椎小关节突相互关系改变的观察。结果发现前屈侧弯旋转法对腰椎小关节突的活动幅度最大,直立旋转法次之,向左侧旋转时小关节突作切面的旋转滑动,右侧小关节间隙增大;向右侧旋转时反之。做前屈侧弯旋转法时,当脊柱向左侧旋转时,椎间盘左后外侧压力增高,同时右后外侧压力减低;向右旋时则反之。而当旋转动作结束复原时,出现负压的一侧均出现一个微小的正压,这种正负压力多次反复的变化,可以使突出的髓核变位或变形,从而使受压的神经根减张。Institute of Orthopaedics & Traumatology,China Academy of Traditional Chinese Medicine(100700) The stress changes on posterior lateral edges of L4-5.L5-S1 discs and the positional alternates of articular processes of lumbar facet joints were measured while mimicing rotatory manipulations were performed on three spinal specimens from fresh cadavers.The study showed that rotatory manipulation with anterior and lateral flexion allowed a greater range of motion between articular processes of lumbar facet joints than straight rotatory manipulation.There was a sliding movement between articular processes while the spine was rotated.The interarticular space of the right facet joint was increased when the spine rotated to the left and vice versa.The sliding movement between the articular processes can adjust the position of lumbar vertebra.The pressure was increased at the left posterior lateral site of the disc and was decreased at the right posterior lateral site of the disc while the spinal specimen was rotaed during flexion to the left.and vice versa.Negative pressure would be changed to positive at the end stage of rotatory manipulation.Such kind of repeated changes of pressure will change the position and shape of the protruded nucleus,and modification of the pressure on the nerve root would be happened.
分 类 号:R274.915.3[医药卫生—中西医结合]
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