J Rhinol.  1998 May;5(1):19-22.

Surgical Anatomy around the Maxillary Sinus Ostium in Cadavers

Affiliations
  • 1Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Hanyang University, Seoul, Korea

Abstract


OBJECTIVES
The goal of this study is to observe the anatomy around the maxillary sinus ostium and gain an understanding that will help prevent serious complications during middle meatal antrostomies.
MATERIALS AND METHODS
Dissection of the maxillary sinuses was carried out in 64 embalmed frozen cadavers, 105 maxillary sinuses. Using a digital ruler, forceps and a malleable probe, we measured the important anatomical relationships around the maxillary sinus ostium and uncinate process, the accessory ostium, and the nasolacrimal duct.
RESULTS
1) The mean width of the uncinate process was 4.9 mm in the mid portion ; 2) A natural ostium of the canal type was observed in 76% of cases ; 3) An accessory ostium was found in 18% of cases and the mean size was 3.17x2.41 mm ; and 4) The mean shortest distance between the nasolacrimal duct and the natural ostium was 4.8 mm.
CONCLUSION
Surgeons must keep surgical anatomy in mind to prevent complications when performing endoscopic sinus surgery.

Keyword

Surgical anatomy; Maxillary sinus ostium
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