Chinese Journal of Clinical Anatomy >
An endoscopic anatomic study of navigation-assisted extended transsphenoidal approach to clival region
Received date: 2013-08-12
Online published: 2014-04-21
Objective To study the exposure of clival region by navigation-assisted extended transsphenoidal approach and provide microanatomical data for incision of lesions in petroclival region by transsphenoidal approach. Methods 10 adult wet cadaveric heads were used to simulate endoscopic extended transsphenoidal approach under assistance of navigation, and important anatomical exposure in petroclival region was observed. Results After the anterior wall of thesphenoid sinus was opened, bone structure in the dorsum sellae and clival region was grinded out and dura was cut open, the bilateral oculomotor nerves, trigeminal gangliae, basilar artery and its branches, the posterior inferior cerebellar artery and lower cranial nerve were exposed; under the assistance of navigation, accurate data measurement and positioning could be performed. The clival region could be completely exposed by extended transsphenoidal approach and the shortest distance was (88.90±2.62) mm. The grinding territory for the anterior wall of the sphenoid sinus and lower clivus were respectively determined with bilateral pterygoid canals and breakdown holes as the border, with a distance to the middle line at (9.22±0.48) mm and (10.60±0.82) mm respectively. Conclusions Endoscopic extended transsphenotidal approach is an appropriate approach for lesions in petroclival region. Navigation assistance that can provide higher securityis beneficial for positioning of important structure.
Key words： Clivus, endoscope; Extended transsphenotidal; Navigation
CHEN Gao-Dong , LUO Zheng-Xiang , YANG Kun , DIAO Feng-Lai , JIAN Chun-Fa . An endoscopic anatomic study of navigation-assisted extended transsphenoidal approach to clival region[J]. Chinese Journal of Clinical Anatomy, 2014 , 32(2) : 148 -152 . DOI: 10.13418/j.issn.1001-165x.2014
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