经乙状窦后入路小脑前下动脉显微解剖学研究  

Endoscope-assisted Microanatomy Study of Anterior Inferior Cerebellar Artery through Retrosigmoid Approach

作　　者：李俊[1] 秦尚振[1] 李监松[2] 马廉亭[1] 牛光明[3] 龚杰[1] 张振海[1] 薛德麟[3] 

机构地区：[1]广州军区武汉总医院神经外科,武汉430070 [2]华中科技大学同济医学院附属协和医院神经外科,武汉430022 [3]华中科技大学同济医学院附属同济医院神经外科,武汉430030

出　　处：《中国临床神经外科杂志》2002年第3期143-145,共3页Chinese Journal of Clinical Neurosurgery

基　　金：全军医药卫生科研基金课题(01MA039)

摘　　要：目的 研究小脑前下动脉(AICA)的显微解剖学特点及临床应用价值。方法 取6具尸头,经乙状窦后入路,用手术显微镜、神经内镜观察AICA的行程、分支、分布及其与周围结构的关系。结果 共观察到15支AICA,无AICA缺如,AICA发出四组重要的分支:桥延支、内听动脉、回返穿通支和弓状下动脉。AICA紧贴面听神经腹侧行走,并发出分支营养神经。结论 AICA与脑干、面听神经关系密切。听神经瘤手术中应妥善保护其主干及分支,以提高面听神经功能保留率。Objective To explore the microanatomy characteristics of anterior inferior cerebellar artery (AICA) and its importance in the operation. Method The course, distribution and branches of AICA and its relationship to the surrounding structures were observed through retrosigmoid approach by operative microscope and neuro-endoscope in 6 cadaver heads. Results Fifteen AICAs were found. There was AICA in every cerebellum pons angle (CPA) region. An AICA sent out 4 important branches, i.e. pons-oblongada branche, internal auditory artery, recurrent perforating artery and subarcuate artery. AICA ran under cranial nerves Ⅶ, Ⅷ and sent out its branches to the nerves. Conclusions AICA is an important artery in the CPA region. There are close relationship between AICA and the brain stem, or cranial nerves Ⅶ and Ⅷ. AICA and its branches must be protected in the acoustic neuroma operation to avoid severe complications and to save the function of cranial nerves Ⅶand Ⅷ.

关 键 词：小脑前下动脉 显微解剖 神经内镜 听神经瘤 经乙状窦后入路 神经保护 

分 类 号：R739.4[医药卫生—肿瘤]