小脑下前动脉与前庭蜗神经关系的解剖学观察

OBSERVATION ON THE RELATIONSHIP OF THE ANTERIOR INFERIOR CEREBELLAR ARTERY AND VESTIBULOCOCHLEAR NERVE

目的 观察人小脑下前动脉的走行和与前庭蜗神经间的解剖学位置关系。 方法 对20具甲醛固 定的人尸颅进行测量,重点观察了小脑下前动脉及主要分支的走行和与前庭蜗神经间的位置关系。 结果 小脑 下前动脉出现率为100%,回返穿通动脉为100%,小脑下前动脉袢为100%。回返穿通动脉位于面神经、前庭蜗神 经之间有32例(80%)。前庭蜗神经血管接触率为95%,2支或2支以上血管与前庭蜗神经接触的有20例,占 50%。 结论 实验结果为桥脑小脑角手术提供解剖学资料。

Objective To observe the anatomic relation of the anterior inferior cerebellar artery and the vestibulocochlear nerve. Methods The anterior inferior cerebellar artery and branches related with the vestibulocochlear nerve in the cerebellopontine angle were examined with the operating microscopy in 20 adult head cadavers fixed with formalin. Results The incidence of the anterior inferior cerebellar artery, recurrent perforating artery and anterior inferior cerebellar artery loop was 100percent.The 80 percent recurrent perforating arteries passed between the facial nerve and the vestibulocochlear nerve. The 95 percent vestibulocochlear nerves had contact with the anterior inferior cerebellar artery or its branches. Among them, The 50 percent had two or more branches contacted with the vestibulocochlear nerves.Conclusion The result will supply useful anatomic data for the surgery in the cerebellopontine angle.