桥脑小脑角的临床解剖及在前庭蜗神经瘤切除术的意义

目的：为了在前庭蜗神经瘤（ＶＮ）手术中提高面神经和前庭蜗神经功能保留率。方法：在手术显微镜下观察了５２例前庭蜗神经瘤病人的桥脑小脑角（ＣＰＡ）解剖结构及ＶＮ与周围神经、血管的解剖关系。结果：在ＶＮ包膜外两层蛛网膜间粘连最少，容易解剖分离，有利于术中保留面、前庭蜗神经功能。结论：在手术显微镜下能更清晰地辨清ＶＮ周围的解剖关系，有助于减少面、前庭蜗神经的损伤。

The clinical anatomy of cerebellopontine angle and its significance in the ectomy of vestibulocochlear neuroma

Objective:To provide anatomy base to increase the chance of maintaining the facial and vestibulocochlear nerve in the ectomy of vestibulocochlear neuroma(VN).Methods:The anatomic construction of the cerebellopontile angle(CPA) and the relationship of VN and its surrounding nerves and vessels were observed under microscope.Results:There were two layers of arachnoid on the surface of VN.These two layers arachnoid were quite tightly bonded with each other and could be separated easily.In this way,its possible to protect the facial nerve and vestibulocochlear nerve from being damaged in operation.Conclusions:The anatomic relation of VN and its surrounding structure could be exposed more clearly under a microscope and this reduce the chance of damaging the facial nerve and vestibulocochlear nerve.