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目的 :介绍回返穿通动脉 (RPA)与面 听神经的关系 ,为桥小脑角 (CPA)的前庭 耳蜗神经 (VN)血管减压术提供有实用价值的解剖学资料。方法 :测量 2 0具经甲醛固定的成人尸颅 ,观察CPA内与面、听神经有关的RPA的解剖结构 ,重点是与VN间的位置关系。结果 :RPA出现率为 10 0 % ,发出 1个分支的有 30侧(75 .0 % ) ,2个分支的有 10侧 (2 5 .0 % ) ;位于面神经 (FN)、VN之间有 32侧 (80 .0 % ) ,其中 87.5 %位于FN中外2 / 3。VN的血管接触率为 95 % ,有 2支或 2支以上血管与VN接触的有 2 0侧 (5 0 .0 % )。结论 :了解、熟悉RPA与面 听神经的关系 ,对提高VN显微血管减压术的成功率以及临床影像学的诊断价值具有指导意义
OBJECTIVE: To introduce the relationship between the return perforating artery (RPA) and the facial nerve and provide useful anatomic data for the vestibular cochlear nerve (VN) vascular decompression of the cerebellopontine angle (CPA). METHODS: Twenty adult cadaver heads fixed with formaldehyde were measured. The anatomic structures of facial and auditory nerve-related RPAs in CPA were observed. The focus was on the positional relationship with VN. Results: The incidence of RPA was 10%. One branch had 30 sides (75.0%) and the other 10 branches (2.5%). There was a significant difference between the facial nerve (FN) and VN 32 sides (80.0%), of which 87.5% were located outside the FN 2/3. Vascular contact rate of VN was 95%. There were 20 or more (50.0%) vessels with two or more vessels in contact with VN. Conclusion: It is instructive to understand and understand the relationship between RPA and facial nerve in order to improve the success rate of VN microvascular decompression and the diagnostic value of clinical imaging