腰骶神经根感觉分布区的临床研究

Clinical study on sensory distribution innervated by lumbosacral nerve roots

目的：确定腰骶神经根的感觉分布区。方法：对１６６名因腰椎间盘突出症引起Ｌ４～Ｓ１单根神经根损害的患者进行检查，记录其下肢感觉障碍区的范围。结果：Ｌ４～Ｓ１神经根损害皮肤感觉障碍区分别以膝及小腿内侧、足背第１、２趾之间及足底最外侧最为常见，因此为这些神经根的自主区。结论：感觉检查对于腰骶神经根损害的定位诊断具有重要意义，而自主区的感觉检查可简化诊断过程。

Objective: To make definitely the sensory distribution area of lumbosacral nerve roots. Methods: Exa mination was made on 166 patients with L 4 S 1 monoradiculopathy due to lumbar disc herniation to record the sensory deficit of lower limb.Results:Sensory deficit was located at the medial aspects of knee and leg in L 4 lesion,at the dorsal aspect of the foot between the great and the second toe in L 5 lesion,and at the lateral plantar aspect of the foot in S 1 lesion respectively. Thereby, these areas were defined as the autonomous zones for lumbosacral nerve roots.Conclusions:Sensory assessment is of great importance to level diagnosis of lumbosacral radicular lesion, and examination of the autonomous zone might simplify the diagnostic process and make the results more reliable.