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通过临床选择性脊神经后根切断术中观察与测量,为临床提供了重要的参考数据。腰骶神经前、后根解剖会合点至椎间孔距离平均为1.5～2.0cm。前后两根相比,后根明显较前根粗,其中以L_5后根最粗、L_2～S_1各后根内小束的数目为4～18束,平均为7束,临床分离后根时可分为7束,以便进行电刺激选择。这些资料为腰骶部选择性脊神经后根切断术和马尾神经的手术提供了重要依据。
Through clinical selective posterior rhizotomy in the observation and measurement, provides an important reference for the clinical data. Lumbosacral nerve anterior and posterior root anatomical junction distance to the foramen average 1.5 ~ 2.0cm. Compared with the anterior and posterior roots, the posterior root was significantly thicker than the anterior root, and the largest root of L_5 posterior root was found. The number of small posterior root bundle in L_2 ~ S_1 ranged from 4 to 18, with an average of 7 bundles. Divided into 7 bundles for electrical stimulation selection. These data provide an important basis for lumbosacral selective posterior rhizotomy and cauda equina surgery.