摘要
用神经束追踪分离法解剖观察100侧成人第七颈神经分布至尺神经内的纤维行径。结合临床观察认为,尺神经内部有来自颈七的纤维,主要经4个交通部位加入到尺神经分布区内。证明脊神经相应节段与骨骼肌或肌群的支配关系是恒定的,只是由于在胚胎发生上臂丛组合的不同,使脊神经的分支到所支配的骨骼肌间的行径出现差异。上述研究结果,对臂丛中、下干损伤准确定位诊断有重要意义。
The course of the severth cervical nerve component in the ulnar nerve wasobserved in 100 sides of adult cadavers using the separating method along thenerve fascicles.The results showed that in all the ulnar nerves there are fibers ofthe seventh cervical nerve which add into the ulnar nerve mainly through 4 commu-nicating parts.It is confirmed that each muscle(or muscle group)is innervated bynerve(s)coming from a definite spinal nerve.However,the nerves for differentmuscles may undergo various recombinations in the branchial plexus during embryo-geneses,which results in that the correspondingf branch of the spinal nerve goingto different muscles will have different pathways.These findings have importantclinic significance for the exact level diagnosis of the middle or lower trunk injuryof the brachial plexus.
作者
韩震
钟世镇
孙博
顾玉东
Han Zhen(Department of Anatomy,the First Medical University of PLA)
出处
《中国临床解剖学杂志》
1987年第2期68-70,123,共4页
Chinese Journal of Clinical Anatomy
关键词
尺神经
正中神经
臂丛
ulnar nerve
median nerve
brachial plexus
