A microanatomic study of endoscope-assisted presigmoid-retrolabyrinthine keyhole approach to the petroclival region
10.3760/cma.j.issn.1671-8925.2009.08.014
- VernacularTitle:神经内镜辅助下乙状窦前迷路后锁孔入路处理岩斜区病变的应用解剖研究
- Author:
Zhi-Qiang PENG
1
;
Guang-Yong TIAN
;
Yong-Yuan HE
;
Da-Chuan XU
Author Information
1. 广东省广州市番禺区人民医院
- Keywords:
Operation approach;
Sinuses sigmoideus;
Labyrinth;
Keyhole;
Neuroendoscopy
- From:
Chinese Journal of Neuromedicine
2009;8(8):810-812
- CountryChina
- Language:Chinese
-
Abstract:
Objective To provide an anatomical basis for endoscope-assisted presigmoid-retrolabyrinthine keyhole approach to the petroclival region. Methods Ten formalin-fixed adult cadaver heads were used in this study. A C-shaped postauricular skin incision about 6 cm in length was made to expose the anatomic structures, which were observed under microscope and endoscope. Results The distance from the anterior margin of the sigraoid sinus to the most posterior point of the posterior semicircular canal was 9.1±1.3 mm on the right and 9.6±1.8 mm on the left side. With appropriate adjustment of the endoscope and the angle of the microscope, the presigmoid-retrolabyrinthine keyhole approach allowed good exposure of the important structures in the petroclival region with also clear display of the cranial nerves and the adjacent blood vessels. Conclusion The facial and vestibulocochlear nerves and the posterior orifice of the internal auditory canal can be used as the landmarks for localization of the peroclival region and its surrounding structures.
