颈髓神经根硬膜性被膜内神经末梢分布的研究

目的 调查人颈髓神经根硬膜性被膜内神经末梢的数量分布,探讨颈神经根性疼痛的发病机制。 方法 对１８例病理解剖尸体３９个颈神经根、神经节及其远端的脊髓神经标本,采用铃木镀银染色法及Ｋｌｕｖｅｒ－Ｂａｒｒｅｒａ髓鞘染色法,制得２０μｍ连续切片２０６９张,用光学显微镜定量地观测了上述部位神经组织被膜中各种神经感受器的形态结构及其存在的部位、数量和分布的特点。 结果 神经根、神经节及脊髓神经被膜内存在游离

The distribution of nerve endings in the human cervical nerve roots

OBJECTIVE: To find out the distribution of nerve endings in the dural sheath of cervical nerve roots and to study the mechanism of cervical radicular pain. METHOD: 2069 20 microm serial sections were made from 39 cervical root-dorsal root ganglion specimens obtained from 18 postmortems. By using optical microscope and Suzuki silver impregnation method and Klüver-Brrera method, we examined the morphology, quantity and distribution of the nerve ending in the nerve sheath of the root, dorsal root ganglion (DRG) and the spinal nerve of these sections. RESULT: There were several kinds of nerve endings such as free nerve endings in the nerve sheath of the root, the dorsal root ganglion, and the spinal nerve. Free nerve endings were distributed in the proximal and distal portions of DRG sheath more extensive than that in other parts of the dural root-sheaths. CONCLUSION: The free nerve endings in the dural root-sheaths especially those in the DRG sheath are thought to play an important role in cervical radicular pain.