腰骶部脊神经形成马尾后在腰椎管内行程中的形态,脊神经前后根之间的关系,脊神经前后根的直径和后根的自然分束等,徐林(1991)已进行了临床解剖学观察。本研究通过腰骶段椎板单开门切开显露选择性神经后根切断手术,术中解剖观察,对腰_2～骶_1脊神经前后根会合段的距离进行测量,对腰_2～骶_1脊神经前后根会合段与相应椎板的关系进行了临床解剖学观察,其目的是为了减少手术对脊柱的损坏采用椎板节段开窗施行选择性腰骶神经后根切断手术,提供进一步的解剖学资料。 Lumbosacral spinal nerve formation after the cauda equina in the lumbar spinal canal stroke in the shape of the relationship between the anterior and posterior spinal nerve root anterior and posterior root diameter and posterior root of the natural beam, etc., Xu Lin (1991) has conducted clinical anatomy. In this study, lumbosacral vertebral laminectomy single open the door to reveal the selective posterior rhizotomy surgery, intraoperative anatomical observation of the lumbar _2 ~ sacral _1 spinal nerve root segment before and after the convergence of the segment to measure the waist _2 ~ sacral _1 spinal nerve anterior and posterior conjunctiva associated with the corresponding lamina clinical anatomy of the observation that the purpose is to reduce the damage to the spine by the operation of the lamina lumbar segment of the window to perform selective lumbosacral nerve root posterior rhizotomy to provide further Anatomy data.