乙状窦后入路桥小脑角神经血管显微解剖研究  

Microanatomical study of the neurovascular complex in the cerebellopontine angle region through imitating the operation of retrosigmoid approach

作　　者：姜永强[1] 王芳[2] 孙志刚[1] 李晓军[1] 周志强[1] 

机构地区：[1]内蒙古自治区包头市中心医院神经外科,内蒙古包头014040 [2]包头市医学院第一附属医院妇产科,内蒙古包头014010

出　　处：《实用临床医药杂志》2011年第24期22-23,共2页Journal of Clinical Medicine in Practice

基　　金：中国高校医学期刊临床专项资金(11120035)

摘　　要：目的模拟乙状窦后入路的手术操作,观察桥小脑角与听神经瘤相关血管的走行,为手术提供相关依据。方法对16例(32侧)的完整成人尸头通过显微镜模拟手术入路、逐层解剖,观察小脑前下动脉(AICA)及小脑后下动脉(PICA)。结果 32侧均有AICA及PICA。30支AICA起源于基底动脉(BA),占93.75%。25支PICA起自椎动脉上端平橄榄中下1/3平面,占78.75%。结论小脑桥脑角区神经血管差异较大,熟悉其解剖结构,对手术中提高面神经、位听神经的功能保存,降低死亡率有重要意义。Objective To study the shape of cerebellopontine angle（CPA） and the relation- ship of the structures through imitating the operation of retrosigmoid approach under operative mi- croscope to provide anatomic base for retrosigmoid approach. Methods The CPA and its structures were observed by operative microscope on 16 adule cadaverie heads via the restrosigmoid approach. Results The anterior inferior cerebellar artery（AICA） mainly originated from the basilar artery as a single（30CPAs, 93.75% ）. The posterior inferior cerebellar artery （PICA） mainly originated from vertebral artery （25CPAs, 78.75 % ）. Conclusion There are huge differences of the nerves and blood vessels in CPA. This anatomic study will help the neurosurgeon to correctly localize the facial and cochlear nerve, improve functional protection of the facial and cranial nerve during operations and decrease morality.

关 键 词：桥小脑角 听神经瘤 乙状窦后入路 小脑前下动脉 小脑后下动脉 

分 类 号：R322.85[医药卫生—人体解剖和组织胚胎学]