高清系统下臂丛神经的解剖形态测量：大鼠实验研究
Anatomorphometry of the brachial plexus under high-definition system: an experimental study in rats.
作者信息
Barros Rui Sergio Monteiro de, Santos Deivid Ramos Dos, Teixeira Renan Kleber Costa, Araújo Nayara Pontes de, Somensi Danusa Neves, Candido Atylla de Andrade
机构信息
PhD, Associate Professor. Universidade do Estado do Pará - School of Medicine - Department of Experimental Surgery - Laboratory of Experimental Surgery - Belém (PA), Brazil.
Fellow Master degree. Universidade do Estado do Pará - Postgraduate Program in Surgery and Experimental Research - Department of Microsurgery - Laboratory of Experimental Surgery - Belém (PA), Brazil.
出版信息
Acta Cir Bras. 2022 May 2;37(2):e370206. doi: 10.1590/acb370206. eCollection 2022.
PURPOSE
To study the anatomorphometry of the plexus brachialis (PB) of rats under a high-definition video system.
METHODS
Ten male Wistar rats discarded from other research that did not interfere in the morphology of the animal, respecting the principle of reduction, were used. All animals were submitted to the same protocol. Initially, the cervical region was shaved. The animals were placed in a dorsal position. A single elbow-to-elbow incision was performed and dissection started at the deltopectoral sulcus. The procedures were performed under a video system. To measure the structures, the Image J software was used.
RESULTS
All the PB evaluated originated from the C5-T1 spinal nerves. C5 and C6 converged to form the truncus superior, the root of C7 originated the truncus medius, and the confluence of C8 and T1 originated the truncus inferior. It was found the union of C7, C8, and T1 to form truncus inferomedialis instead of separate medial and inferior truncus. C8 (1.31 mm) was the thickest root, the truncus inferior (1.80 mm) and the nerve radialis (1.02 mm), were the thickest.
CONCLUSIONS
The anatomy of the PB is comparable to humans, admitting variations. The videomagnification system is useful to perform microsurgical dissection.
目的
在高清视频系统下研究大鼠臂丛神经（PB）的解剖形态学。
方法
使用从其他不影响动物形态的研究中淘汰的10只雄性Wistar大鼠，遵循减少原则。所有动物均采用相同方案。首先，剃去颈部毛发。将动物置于背位。做一个从一侧肘部到另一侧肘部的单一切口，从三角胸肌沟开始解剖。操作在视频系统下进行。使用Image J软件测量结构。
结果
所有评估的PB均起源于C5 - T1脊神经。C5和C6汇合形成上干，C7的神经根形成中干，C8和T1的汇合形成下干。发现C7、C8和T1联合形成下内侧干，而非单独的内侧干和下干。C8（1.31毫米）是最粗的神经根，下干（1.80毫米）和桡神经（1.02毫米）最粗。
结论
PB的解剖结构与人类相似，但存在变异。视频放大系统有助于进行显微外科解剖。
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