Brunsteins D B, Ferreri A J
Department of Anatomy, Medicine School, University of Buenos Aires, Argentina.
Acta Anat (Basel). 1995;152(2):143-50. doi: 10.1159/000147693.
The distribution and location of the labyrinthine arteries (LA) have been investigated in 6 adults and 15 human fetuses using microdissection. The LA is a single or double artery that penetrates the internal acoustic meatus (IAM) extending to the arachnoidal, dural, temporal and neural branches and ending at the fundus of the IAM in three terminal branches, namely the anterior vestibular artery (AVA), the vestibulocochlear artery (VCA) and the cochlear artery (CA). When the LA is a single artery, it is located on the cochlear nerve, under the facial nerve, and ends in the hiatus between the cochlear and the vestibular nerves. In cases with a biarterial system, the inferior LA passes under the nerves and becomes the VCA at the fundus of the IAM. The location of the superior LA is similar to that of the LA in the monoarterial system and the superior LA terminates at the cochlear artery and the VCA. The nomenclature, distribution and surgical importance of the two arterial patterns are analyzed.
利用显微解剖技术，对6例成人及15例人类胎儿的迷路动脉（LA）的分布及位置进行了研究。迷路动脉是一条单支或双支动脉，它穿过内耳道（IAM），延伸至蛛网膜、硬脑膜、颞部及神经分支，在三个终末分支，即前庭前动脉（AVA）、前庭蜗动脉（VCA）和蜗动脉（CA）处终止于内耳道底部。当迷路动脉为单支动脉时，它位于蜗神经上、面神经下，并在内耳道底部蜗神经与前庭神经之间的裂隙处终止。在双动脉系统的病例中，下迷路动脉走行于神经下方，并在内耳道底部成为前庭蜗动脉。上迷路动脉的位置与单动脉系统中迷路动脉的位置相似，上迷路动脉终止于蜗动脉和前庭蜗动脉。分析了这两种动脉模式的命名、分布及手术意义。
