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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。
Neurofibrillary tracking method was used to dissect the distribution of the seventh cervical nerves in 100 adults to the fibers in the ulnar nerve. Combined with clinical observation that the ulnar nerve fibers from the neck seven, mainly through the four traffic to join the ulnar nerve distribution. Proved that the corresponding segment of the spinal nerve and skeletal muscle or muscle group dominated the relationship is constant, only because of the different combination of embryonic brachial plexus, the branch of the spinal nerves to the skeletal muscle dominated behavior differences. The above findings, the brachial plexus injury, accurate diagnosis of inferior position is important.