腰神经后根形态计量研究  

Applied Anatomical Research on the Dorsal Roots of the Lumbar Nerves

作　　者：瞿佐发[1] 

机构地区：[1]三峡大学医学院,湖北宜昌443003

出　　处：《湖北民族学院学报（医学版）》2009年第2期37-38,41,共3页Journal of Hubei Minzu University(Medical Edition)

摘　　要：目的研究腰神经后根的特点,为显微内镜椎管手术的成功运用提供解剖学知识。方法用巨视解剖和游标卡尺测量法对15具尸体的腰神经根及腰神经根鞘进行解剖学观察和测量。结果腰神经后根的囊外段长度、硬膜点横径和脊髓点束数在逐节增大;后根的囊外段与囊长轴之下夹角<90°,并逐节减小;交通支丰富。结论根椐研究结果,进行腰神经后根受损危险排序,L1>L2>L3>L4>L5。术中应注意腰神经后根及腰神经根鞘的解剖学特点。Objective To investigate the features of the dorsal roots of the lumbar nerves for applying to endoscope - assisted microsurgery. Methods The dorsal roots of the lumbar nerves in 15 cadavers were dissected and measured by gross anatomy to examine the relationship between the roots and dural sac. Results The length and diameter of the dorsal root external and internal dural sac increase gradually from L1 to L5,the diameter and the number of dorsal root bands entering the spinal cord also increase as before, the lowangle between the dorsal root and spinal cord is lesser than 90° ,and gradually decrease; The communicating branches are rich between the dorsal roots. Conclusion According to the results, the dorsal roots susceptible to be injured are L1 〉 L2 〉 L3 〉 L4 〉 L5. Anatomic features of the dorsal roots should be noticed in the operation.

关 键 词：显微内镜 腰神经后根 应用解剖学 

分 类 号：R329.4[医药卫生—人体解剖和组织胚胎学]