2022
DOI: 10.1590/acb370307
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Anatomical description of the ventral and dorsal cervical rootlets in rats: A microsurgical study

Abstract: Purpose: To describe the anatomical aspects of the cervical rootlets and to quantify the number of rootlets that compose C1 to T1. Methods: Twenty male rats were used in this study. The dorsal rootlets from C1 to T1 were analyzed. To study the ventral rootlets, the posterior root avulsion was performed using a microhook, allowing exposure of the ventral roots through manipulation of the denticulate ligament and arachnoid mater. The parameters analyzed were the number of… Show more

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(5 citation statements)
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“…Although this experimental model is used in several studies on facial nerves, few of them consider microsurgical anatomy and possible anatomical variations, which may lead to significant biases in interpretation due to the different neural arrangements present in the model in question. Specific studies on the anatomy of the facial nerve of rats are old and lacked the technology to microdissect the terminal branches of the nerve and understand their anatomical distribution 20,21 . For this, the extended video microsurgery system was used, which allows greater comfort for the surgeon and better access to the surgical field, making dissection less time-consuming 19 .…”
Section: Experimental Model and Videomagnification Systemmentioning
confidence: 99%
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“…Although this experimental model is used in several studies on facial nerves, few of them consider microsurgical anatomy and possible anatomical variations, which may lead to significant biases in interpretation due to the different neural arrangements present in the model in question. Specific studies on the anatomy of the facial nerve of rats are old and lacked the technology to microdissect the terminal branches of the nerve and understand their anatomical distribution 20,21 . For this, the extended video microsurgery system was used, which allows greater comfort for the surgeon and better access to the surgical field, making dissection less time-consuming 19 .…”
Section: Experimental Model and Videomagnification Systemmentioning
confidence: 99%
“…This makes it difficult to dissect it without damaging part of it, due to its intrinsic relationship with the adjacent tissue. Some authors report the need to remove part of the temporal bone to facilitate surgical access [20][21][22] , but in this study the cranial bones were preserved. It is noteworthy that rats do not have an internal jugular vein; thus, all cranial drainage occurs through tributary veins of the external jugular vein, which has a clear path laterally to almost all branches that make up the facial nerve 26,27 .…”
Section: Facial Nervementioning
confidence: 99%
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