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目的:为临床选择性颈7神经根移位治疗臂丛损伤提供进一步依据。方法:选择6侧新鲜成人尸体臂丛标本,分离颈7神经根干、股及其发出到上肢各主要神经的主要纤维束,并分别进行胆碱酯酶染色。结果:人类颈7神经根含运动纤维约8893根,其中前股3010根,后股5883根;颈7前股中,加入肌皮神经的成分约589根(占肌皮神经总运动纤维约20%),正中神经1931根(占其外侧头70%);颈7后股中,加入腋神经成分611根(占其运动纤维的25%),桡神经4036根(占58％),胸背神经994根(占60％).结论:颈7神经根前后股均有足够的运动纤维量;同侧颈7神经根移位时建议保留前股;采用颈7神经根移位,修复多条受损神经是可行的。
Objective: To provide further evidence for the treatment of brachial plexus injury in clinical selective cervical 7 nerve root transposition. Methods: Six fresh adult cadaveric brachial plexus specimens were selected, and the main nerve bundles of the 7th nerve root and the femoral nerve were dissected. The main fiber bundles of the main nerves of the upper extremity were separated and stained with cholinesterase. Results: The human cervical 7 nerve root contains about 8893 movement fibers, of which 3010 are the anterior and 5883 posterior strands. In the anterior neck of the neck 7, about 589 (about 20% of the total muscular nerve motility fibers are involved) %), The median nerve 1931 (accounting for 70% of its lateral head); neck 7 after the stock, joined the axillary nerve component 611 (25% of its movement of fibers), radial nerve 4036 (58%), Nerve 994 (60%) .Conclusion: Before and after cervical 7 nerve root have enough exercise fiber; ipsilateral neck 7 nerve root displacement is recommended to retain the former stock; the use of the neck 7 nerve root displacement, repair a number of Damaged nerves are feasible.