Efficacy of ArchSinus, NasoPore & Propel to Prevent Post-Surgical MT Lateralization and Improve Symptomatic Outcomes

Inclusion Criteria: * Diagnosis of chronic rhinosinusitis defined as symptomatic inflammation of the sinuses of at least 12 consecutive weeks duration despite medical management * CT scan examination with a minimum Zinreich score of 5 prior to study entry * Less than 2-point Zinreich score difference between two sides * Primary FESS including bilateral total ethmoidectomy; symmetrical uncinate process reduction Exclusion Criteria: * Inferior turbinectomy, reduction or outfracture * Polyp grade ˃ 4 bilaterally on Lildholdt's scale (1-3) * Concha bullosa * Severe nasal septal deviation at the level of OMC * Sinonasal tumors * FESS including asymmetrical resection of the middle turbinate * Known allergy to nickel * Known polyurethane induced dermatitis * Oral steroid-dependent condition * Momometasone furoate intolerance * Known hypersensitivity to lactide, glycolide or caprolactone copolymers. * Glaucoma or cataract * History of immune deficiency * Cystic fibrosis * Pregnant or lactating female * Acute sinus inflammation * Coagulation disorders