Microsurgical anatomy study on acoustic neurinoma operation preserving facial nerve
- VernacularTitle:听神经瘤手术保留面神经的显微外科解剖
- Author:
Jianrong LI
;
Yicheng LU
- Publication Type:Journal Article
- Keywords:
facial nerve;
neuroma,acoustic;
microsurgery
- From:
Academic Journal of Second Military Medical University
2000;0(08):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: : T o study the microanatomy of the facial nerve in the cerebellopontine angle (CPA) a nd the internal auditory meatus (IAM) for the preservation of the facial nerve i n the acoustic neurinomas surgery. Methods: Forty sides of CPA f acial nerve of 20 adult cadaver heads were examined. Results: In the pontomedullary sulcus the facial nerve (1.98? 0.10) mm anterior to the vestibulocochlear nerve,(8.76?1.42) mm lateral to the abducent nerve at the points where the nerves join the brain stem at the lateral end of the sulcu s, (8.15?2.18) mm above the junction of the Ⅸ nerve with the medulla. There were 62 nutritious artery supplying the facial nerve in the CPA, mainly from the anterior inferior cerebellaris artery (AICA) and its branches; and 17 in the IA M were mostly from the internal auditory arteria (IAA). Conclusion: To be familiar with the microanatomy of the facial nerve in CPA and IAM is h elpful for localizing the facial nerve and improve its preservation in acoustic neuroma surgery.
