【摘要】 目的 :为胸部选择性脊神经后根切断术 (SPR术 )提供可靠的后根分束的解剖学基础。方法 :对成人尸体胸神经后根的自然分束和后根间神经纤维联系 (CR)进行显微外科解剖学观测。结果 :1条胸神经后根有 4～ 6条根丝组成 ,然后形成 2～ 4根神经亚束 ,最后形成上、下 2股神经束。后根间神经纤维联系出现率为 5 5 .4% ,根据形状可分为 5型 ,根据位置可分为 3类。结论 :胸神经后根各级神经分束较易分离 ,神经纤维联系较为简单 ,有利于临床医生进行SPR术。更多还原

【Abstract】 Objective: To provide anatomic basis of the thoracic posterior root for selective posterior rhizotomy (SPR). Methods: The rootlets of the thoracic posterior roots and the conjoint nerve roots (CR) were observed under microscope in 30 disected cervical specimens. Results: Each posterior roots had 4-6 rootlets, forming 2-4 subbundles and 2 superior-inferior arranged bundle. Occurrence rates of the CR were 55.4%. According to the shape of CR, they could be divided into 5 types; according to the location of CR, they was divided into 3 types. Conclusion: Rootlets of the thoracic posterior root can be separated easily, and the conjoint nerve roots are simple.更多还原