Kim H N, Kim Y H, Park I Y, Kim G R, Chung I H
Department of Otolaryngology, Yonsei University College of Medicine, Seoul, Korea.
Ann Otol Rhinol Laryngol. 1990 Apr;99(4 Pt 1):288-96. doi: 10.1177/000348949009900408.
The variability of the anatomic relationship of the anterior inferior cerebellar artery (AICA) to the facial (seventh) and vestibulocochlear (eighth) nerves was studied in 52 cerebellopontine angles (CPAs) from 26 adult cadavers. The AICA originated from the basilar artery (98.1%) or from the vertebral artery (1.9%) as a single (92.3% of CPAs) or duplicate (7.7%) artery. Each of the 52 CPAs had one or more arterial trunks that coursed in close proximity to the seventh and eighth cranial nerves and thus were said to be nerve-related. The nerve-related arterial trunks were divided into three segments based on their relationship to the nerves and meatus: the premeatal, meatal, and postmeatal segments. The nerve-related branches of the AICA gave rise to the internal auditory artery in 92.3% of the CPAs, the recurrent perforating artery in 78.8%, and the subarcuate artery in 30.8%. The importance of understanding the surgical anatomy of the neurovascular complex of the CPA when performing a vestibular neurectomy is reviewed.
在26具成年尸体的52个小脑脑桥角（CPA）中，研究了小脑下前动脉（AICA）与面神经（第七对）和前庭蜗神经（第八对）解剖关系的变异性。AICA起源于基底动脉（98.1%）或椎动脉（1.9%），为单支动脉（占CPA的92.3%）或双支动脉（7.7%）。52个CPA中的每一个都有一条或多条动脉干，这些动脉干在靠近第七和第八对脑神经处走行，因此被称为与神经相关。与神经相关的动脉干根据其与神经和内耳道的关系分为三段：内耳道前段、内耳道段和内耳道后段。AICA与神经相关的分支在92.3%的CPA中发出内听动脉，78.8%发出返穿动脉，30.8%发出弓下动脉。本文回顾了在进行前庭神经切断术时了解CPA神经血管复合体手术解剖的重要性。
