Functional Endoscopic Sinus Surgery: Maxillary, Ethmoid, and Sphenoid (Cadaver)

1. Preparation and Positioning

2. Medialize Middle Turbinate

3. Uncinectomy

1. Fracture Uncinate Anteriorly
2. Divide Uncinate
3. Remove Uncinate

4. Maxillary Antrostomy

1. Identify Natural Ostium
2. Widen Maxillary Sinus
3. Ensure Natural Ostium

5. Ethmoid Bulla Removal

1. Palpate the Retrobullar Recess
2. Remove Ethmoid Bulla to Fully Expose the Lamina Papyracea Laterally

6. Identify Anatomic Landmarks

7. Enter Basal Lamella

1. Identify Superior Turbinate
2. Remove Basal Lamella

8. Posterior Ethmoidectomy

9. Sphenoidotomy

1. Resect Inferior Portion of Superior Turbinate
2. Dilate Sphenoid Sinus Opening
3. Identify Sphenoid Sinus

10. Superior Ethmoidectomy

1. Remove Partitions along Skull Base