目的 :为恢复截瘫病人膀胱控制功能的椎管内手术提供解剖学依据。方法 :在 10例 (男 3 ,女 7)成人脊柱标本上 ,暴露T11节段以下全部脊髓 ,对各神经根进行观测。结果 :全部L2 ～S1神经根与S2神经根呈重叠关系 ;3例男性和 2例女性L1神经根与S2 神经根与S2 神经根呈重叠关系。除 1例男性的T12 神经根和S2 神经根有重叠外 ,其余全部T12 和T11神经根之间有距离 ,分别为 2 9.1mm和 5 2 .6mm。结论 :椎管内S2 神经根与上位神经根直接吻接 ,在男性最高多数可达L1神经根 ,在女性可达L2 神经根 ;少数(1例 )男性可提高至T12 神经根 ,少数 (2例 )女性可提高至L1神经根。 Objective: To provide an anatomical basis for spinal surgery to restore bladder function in patients with paraplegia. Methods: All the spinal nerves below the T11 segment were exposed in 10 adult (male, female, 7) adult spine specimens. The nerve roots were observed. Results: All L2 ~ S1 nerve roots overlapped with S2 nerve roots. There were overlapping relationships between L1 nerve roots and S2 nerve roots in 3 males and 2 females. Except for the overlap of T12 nerve root and S2 nerve root of one male, all the remaining T12 and T11 nerve roots were separated by 21.9mm and 52.2mm, respectively. Conclusions: The S2 nerve roots in the spinal canal are directly inoculated with the superior nerve root. The highest number of L1 nerve roots can be reached in the male and the L2 nerve roots in the female, while the minority (1) Example) Women can be raised to L1 nerve root.