A CADAVERIC STUDY OF ACCESSORY MAXILLARY OSTIUM AND ITS CLINICAL IMPLICATIONS

Gandhi Kusum R. and Mantri Eti*

ABSTRACT

Aim and Objective: Study was planned to explore the detailed anatomy of accessory maxillary ostium (AMO) and anatomical variation around the maxillary ostium in human cadavers. The precise knowledge will guide the surgeon during endoscopic sinus surgery, sinus augmentation and other sinus procedures. Material and Method: We examined 234 specimens (from 117 cadavers) available in Department of Anatomy, RMC, Loni. The cadavers were fixed by using 10% neutral formalin and were partially dissected by medical students. Midsagittal section of head region was taken with electric band saw. After removing the septum of nose the middle concha and inferior concha was removed to saw the clearly view of the maxillary sinus opening. The shape of maxillary sinus ostium, their location was noted and the distance between MSO and nasal floor was measured with the help of sliding vernier caliper by keeping the head in Frankfurt’s Plane. In present study variations has been observed in location, shape and number of AMO (single, double and multiple). Result: in present study, variation has been observed in location, shape and number of AMO (single, double and multiple). Out of 234 paranasal air sinuses, 68 (29%) cases showed variations in location of accessory maxillary sinus ostium in lateral wall of nasal cavity. The shape was round, oval and ureg shaped. The distance between the nasal floor and the ostium was 36±4 mm on right and 37±5 mm on left side, but variable due to presence of AMO. Conclusion: The current study suggested that, there are many possible locations of AMO. Its presence changes the diagnosis and treatment plan for patient. It helps in endoscopic sinus surgeries.

Keywords: Accessory maxillary ostium, maxillary sinus ostium, semilunar hiatus.