What is the Osteomeatal complex?
Osteomeatal complex is a functional entity of the anterior ethmoid complex that represents the final common pathway for drainage and ventilation of the frontal, maxillary, and anterior ethmoid cells [10].
What is Ostiomeatal complex obstruction?
An obstruction of the ostiomeatal complex, the common passage for the anterior, frontal, and maxillary sinuses, was evident in the diseased condition of all 3 sinuses in patients with unilateral chronic rhinosinusitis.
Where are the 4 sinuses located?
The word “sinus” is most commonly understood to be the paranasal sinuses that are located near the nose and connect to the nasal cavity. There are four paranasal sinuses, each corresponding with the respective bone from which it takes its name: maxillary, ethmoid, sphenoid, and frontal.
What is the success rate of sinus surgery?
Outcome. The results after FESS are good, with most studies reporting an 80 to 90 percent rate of success.
What is right Ostiomeatal complex?
The ostiomeatal complex (OMC) or ostiomeatal unit (OMU), sometimes less correctly spelled as osteomeatal complex, is a common channel that links the frontal sinus, anterior ethmoid air cells and the maxillary sinus to the middle meatus, allowing airflow and mucociliary drainage.
What are the 4 paranasal sinuses?
Paranasal sinuses are named after the bones that contain them: frontal (the lower forehead), maxillary (cheekbones), ethmoid (beside the upper nose), and sphenoid (behind the nose).
Where do sinuses drain into throat?
Both air and mucus flow through your sinuses and drain into your nose, through tiny openings called ostia (or singular, ostium). Little hairs called cilia help the mucus move through the sinus cavities. The mucus from the sinuses drains into your nasal passages and then down the back of your throat to be swallowed.
What is the osteomeatal complex?
Osteomeatal complex Also known as ostiomeatal unit or key area or critical area It is final common pathway for drainage and ventilation of ethmoid, maxillary and frontal sinuses. 4.
What are the anatomical variations of the ostiomeatal complex?
Several types of anatomical variations, of either pre-developmental or post-developmental aetiologies, have been observed in the ostiomeatal complex. The structures most frequently affected include the uncinate process, nasal septum, and middle turbinate.
Where is the ostiomeatal cluster located?
This cluster of ostia and their corresponding drainage channels are located on the lateral wall of the nasal cavity, deep to the middle concha. Contents of the anterior paranasal sinuses that enter the ostiomeatal complex will subsequently drain into the middle meatus before traveling into the nasopharynx.
What is the role of osteomeatal complex in the pathophysiology of rhinosinusitis?
The harmony of mucociliary clearance and obstruction free osteomeatal complex is the key factor for ventilation and drainage of maxillary, frontal and anterior ethmoidal air cells. Presumably, these variations might induce osteal obstruction, preventing mucus drainage and predisposing to chronic rhinosinusitis.