Surgical relevance of sphenoid sinus and its ostium: An anatomical study

D’Souza, Annet and Ankolekar, Vrinda Hari and Das, Aswin and Kotian, Sushma R and Mamatha, H and D’Souza, Antony Sylvan (2013) Surgical relevance of sphenoid sinus and its ostium: An anatomical study. Journal of Clinical & Experimental Research, 1 (3). pp. 43-46. ISSN 2320-348X

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Back ground: Sphenoid sinuses and their ostia are highly variable structures. Normal opening of sphenoid sinus lies in the spheno ethmoidal recess medial to superior turbinate. The sphenoid sinus is surrounded by several important structures like optic nerve, carotid arteries and the trigeminal nerves. Objective: The present study was performed to determine the anatomical correlations of the sphenoid sinus ostium with surrounding structures. Materials and Methods: The study was carried out in the Department of Anatomy, Kasturba Medical College, Manipal on 40 sagittal head and neck sections of adult formalin fixed cadavers. The shape of the sphenoid sinus ostia was noted. The distance of the ostium from the major landmarks were measured using vernier calipers. The landmarks used were the choana, nasion, anterior end of superior concha and basi sphenoid. The extent of pneumatization towards the sella was also noted. Results: In our study, majority of cases showed sellar variety on both right and left side. The shape of the sphenoid sinus ostia was slit type in majority of cases followed by oval and round shape. Conclusion: The sphenoid ostium provides a natural portal for entering the sphenoid sinus and beyond up to the base of the skull. It is not always easy to locate the ostium during endoscopic approach. The present study was therefore designed to establish readily identifiable anatomical landmarks for locating the sphenoid ostium.

Item Type: Article
Uncontrolled Keywords: Choana; sphenoethmoidal recess; sphenoid ostium; sphenoid sinus.
Subjects: Medicine > KMC Manipal > Anatomy
Depositing User: KMC Manipal
Date Deposited: 05 Mar 2014 04:34
Last Modified: 05 Mar 2014 04:34

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