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Soft Palate Advancement Flap for Palatal Oronasal Fistulae

The soft palate advancement flap can be used to correct caudal to mid-palatal oronasal fistulae. Palatal oronasal fistulae involve palatal mucosa and underlying palatal bone allowing for communication with the nasal cavity. The possible causes of palatal oronasal fistulae include congenital anomaly, complications of cleft palate repair, and injury from trauma (gunshot, vehicular, falling, electrical shock, foreign body, ingestion of caustic chemicals, or bites). Clinical signs of oronasal fistula may include chronic rhinits, sneezing, and mucopurulent nasal discharge. An obturator device may be used to occlude the defect, however surgery is generally recommended for repair of palatal oronasal fistulae. A soft palate advancement flap technique for repair of caudal palatal oronasal fistulae using a feline cadaver specimen is described step-by-step.