借助于手术显微镜,在137侧标本上,对桥小脑间隙有关结构进行解剖观测。31.3%小脑下前动脉分成外侧支、内侧支;98.9%形成动脉袢。根据动脉袢与Ⅶ、Ⅷ对颅神经关系分成五型。脑干的桥支纤细而且角度大;迷路动脉走在Ⅶ、Ⅷ对颅神经凹槽间或内听道底。讨论了桥小脑间隙内神经血管位置关系的临床意义。 With the aid of a surgical microscope, anatomical observation of the structure of the bridge cerebellar gap was performed on 137 specimens. 31.3% of the anterior inferior cerebellar artery into the lateral branch, medial branch; 98.9% of the formation of arterial loop. According to arterial 袢 and Ⅶ, Ⅷ cranial nerve relationship is divided into five types. Stem branch bridge slender and angle; lost artery walking in VII, Ⅷ between the cranial nerve groove or the end of the auditory canal. The clinical significance of neurovascular position in the cerebellopontine gap was discussed.