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. 2010 Oct;62(4):335-7.
doi: 10.1007/s12070-010-0047-z. Epub 2011 Jan 1.

The location of maxillary sinus ostium and its clinical application

L C Prasanna, H Mamatha

The location of maxillary sinus ostium and its clinical application

L C Prasanna et al. Indian J Otolaryngol Head Neck Surg. 2010 Oct.

Abstract

The endoscopic sinus surgeons must have a detailed knowledge of inconsistent location of maxillary sinus openings in any interventional maxillary sinus surgeries as it relates to the orbital floor, ethmoid infundibulum and the nasolacrimal duct. Forty cadaver head and neck specimens had been cut sagittally through the nose, such that the lateral nasal wall had been preserved. The findings were documented with an emphasis on location of the maxillary sinus openings. In the present study maxillary sinus ostium opened more commonly into posterior third of the hiatus semilunaris. Accessory maxillary ostium was another variation seen in nearly three-fourths of the cases which opened into membranous meatus inferior to the uncinate process.

Keywords: Accessory maxillary ostium; Maxillary os; Maxillary sinus; Ostiomeatal unit.

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Figures

Fig. 1
Fig. 1
Sagittal section showing the primary maxillary ostium (PMO) (AG agger nasi, MT middle turbinate, EB ethmoid bulla, IT inferior turbinate, AMO accessory maxillary ostium)
Fig. 2
Fig. 2
Sagittal section showing absent maxillary sinus ostium with frontal Sinus hypoplasia (arrowed)
Graph 1
Graph 1
Location of the maxillary sinus ostium
See this image and copyright information in PMC

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