Kirik Alparslan, Mut Senem Ertugrul, Daneyemez Mehmet Kadri, Secer Halil Ibrahim
Etimesgut Sehit Sait Erturk State Hospital, Neurosurgery Clinic, Ankara, Turkey.
Turk Neurosurg. 2018;28(5):783-791. doi: 10.5137/1019-5149.JTN.21339-17.2.
To demonstrate the anatomical variations of the infantile brachial plexus.
A total of 20 plexus brachialis from 11 fetal cadavers were dissected and examined microscopically. The branching patterns and variations were evaluated. The width of the nerves was assessed at the level of the nerve root, trunk and cord on the basis of all brachial plexuses and they were arranged in terms of thickness.
Half of the brachial plexuses were found to be prefıxed, while 15% were found to be postfixed. Truncus superior, medial cord and nervus ulnaris were found in normal formation, whereas anatomical variations were detected in the rest of the structures. The plexus brachialis elements were arranged in the following order from large to small according to their average thicknesses: C7 > C6 > C8 > C5=T1; TS > TI > TM; PC > LC > MC.
Since the risk of injury for variated branches is higher, understanding the anatomical variations of plexus brachialis and its extensions are of significant importance during surgical intervention.
展示婴儿臂丛神经的解剖变异。
对11具胎儿尸体的20个臂丛神经进行解剖并显微镜检查。评估分支模式和变异情况。基于所有臂丛神经，在神经根、干和束水平评估神经宽度，并按粗细排列。
发现半数臂丛神经为前置型，15%为后置型。发现上干、内侧束和尺神经形态正常，而其余结构检测到解剖变异。臂丛神经各成分按平均粗细从大到小排列如下：C7 > C6 > C8 > C5=T1；TS > TI > TM；PC > LC > MC。
由于变异分支的损伤风险更高，在手术干预期间了解臂丛神经及其分支的解剖变异具有重要意义。
