Observation of cranial nerves in the cerebellopontine angle region by retrosigmoid approach.
- Author:
Weihua XU
1
;
Guangbin SUN
;
Xiaoping CHEN
;
Qun CHEN
;
Qin FANG
;
Na SUN
;
Yi ZHANG
;
Jingfei ZHANG
;
Mingzhong REN
Author Information
1. Department of Otorhinolaryngology, Pudong Gongli Hospital, Shanghai, 200136, China. xwh1214@126.com
- Publication Type:Journal Article
- MeSH:
Adult;
Cerebellopontine Angle;
anatomy & histology;
Cranial Nerves;
anatomy & histology;
Cranial Sinuses;
anatomy & histology;
surgery;
Facial Nerve;
anatomy & histology;
Glossopharyngeal Nerve;
anatomy & histology;
Humans;
Vestibulocochlear Nerve;
anatomy & histology
- From:
Journal of Clinical Otorhinolaryngology Head and Neck Surgery
2009;23(10):454-455
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To investigate the anatomical structures of cranial nerves in the cerebellopontine angle region to offer anatomical data for clinical operation.
METHOD:A total of 52 adult cadaveric heads fixed in 10% formalin were used for this study. After cutting cerebellum and meningeal between transverse and sigmoid sinus, simulate operating method of retrosigmoid approach to observe the cranial nerves.
RESULT:External diameter and length of left V, VII, VIII, IX cranial nerves are (2.54 +/- 0.84) mm and (6.79 +/- 2.51) mm, (1.18 +/- 0.31) mm and (9.89 +/- 2.66) mm, (2.17 +/- 0.52) mm and (9.92 +/- 2.61) mm, (0.77 +/- 0.24) mm and (10.34 +/- 3.12) mm respectively. External diameter and length of right V , VII, VIII, IX cranial nerves are (2.52 +/- 0.86) mm and (6.91 +/- 2.66) mm, (1.14 +/- 0.31) mm and (10 +/- 2.96) mm, (2.13 +/- 0.63) m and (10.09 +/- 2.93) mm, (0.790.29) mm and (10.17 +/- 3.06) mm. intermedius nerve locate between facial nerve and acoustic nerve, external diameter of intermedius nerve is (0.47 +/- 0.91) mm (left) and (0.37 +/- 0.07) mm (right). Length of vagal nerve is (10.44 +/- 2.57) mm (left), (9.91 +/- 2.91) mm (right), rootlets of f vagal nerve is 6.37 +/- 2.26 (left) and 6.33 +/- 2.38 (right). external diameter of accessory nerve is (0.76 +/- 0.16) mm (left) and (0.81 +/- 0.19) mm (right).
CONCLUSION:This study provide anatomical data for retrosigmoid approach in the cerebellopontine angle region.
