Facial nerve communication with ansa cervicalis - An unusual anatomical variation.

S Gulati, S Tripathy, T Gupta, S Gaba
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Abstract

Neural connections of the seventh cranial nerve with its neighboring nerves are common and well documented; however, communication with ansa cervicalis is as yet unknown. We present a case with such a connection found during cadaveric dissection, with hitherto unknown consequences. In this specimen, after giving the marginal mandibular and cervical branches, the cervicofacial division continued distally to communicate with the distal loop of ansa cervicalis. Presence of such connection may result in facial muscle paralysis on injury to the ansa or strap muscle paralysis on injury to the facial nerve, depending on the direction of nerve fibers. Such unusual connections bring to light the need for extreme care during surgeries in the neck to safeguard any such connections and when using the ansa as donor.

面神经与颈袢的交流——一种不寻常的解剖变异。
第七脑神经与其邻近神经的神经连接是常见的,并有充分的文献记载;然而,与宫颈ansa的交流尚不清楚。我们提出了一个病例,在尸体解剖过程中发现了这种联系,迄今为止未知的后果。在这个标本中,在给出下颌边缘分支和颈分支后,颈面分支继续向远端与颈袢远端连接。这种连接的存在,根据神经纤维的走向不同,可能会导致面肌因受损伤而瘫痪,也可能导致面神经因受损伤而瘫痪。这种不寻常的连接表明,在颈部手术期间,为了保护任何这种连接,以及在使用ansa作为供体时,都需要非常小心。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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