中文摘要：

目的：研究采用新型俯卧屈膝体位预防经后路腰椎间盘手术中神经牵拉伤。方法：选择有手术指征的146例椎间盘突出患者，采用新型俯卧屈膝体位行腰椎间盘手术；同时回顾性收集217例采用传统俯卧体位行腰椎间盘手术患者的临床资料，分析并对比两种不同体位术后发生神经牵拉伤的情况。结果：新型手术体位组中6例发生神经牵拉伤，发生率为4．1％；而对照组中53例发生神经牵拉伤，发生率为12．44％。新型手术体位组的神经根牵拉伤发生率较传统体位组明显降低。结论：新型俯卧屈膝体位可明显减低后路椎间盘手术神经牵拉伤的发生率，值得推广。

英文摘要：

Objective：To evaluate the clinical result of improved surgical positioning in surgical prone and knee flexion in the treatment of lumbar intervertebral disc herniation .Method：146 patients with lumbar interverte-bral disc herniation were treated by disc resection and vertebral interbody fusion by improved surgical prone and knee flexion positioning ,compared with 217 controls by traditional operative positioning .Clinical results of nerve root in-jury were recorded and analyzed .Results ：6 patients in improved positioning group had suffered nerve injury （4 . 1% ） ,while 53 in controls （12 .44% ） .Conclusion：The improved operative positioning could decrease the incidence of the nerve injury significantly compared with conventional position ,which is worthy of wide application .