一侧腰4、5和骶1神经根在椎管内共干,经相应椎间孔发出脊神经的变异,临床解剖学资料报道不多。我们在进行椎间盘突出髓核摘除术中遇见1例,术中曾一度陷入困境,为给临床积累应用解剖学资料现报道如下:患者男,46岁,下腰痛伴右下肢放射痛1年.加重3个月。神经根牵拉试验阳性,右(足母) Side of the lumbar 4,5 and sacral 1 nerve root in the spinal canal were dry, issued by the corresponding intervertebral foraminal nerve variability, clinical anatomy data reported little. We encountered 1 case of discectomy disc herniation, once intraoperative intraoperative difficulties, for the clinical application of anatomical data are reported as follows: The male patient, 46 years old, low back pain with right leg pain for 1 year. 3 months. Nerve root traction test positive, right (foot mother)