Abstract
Four horses were examined because of inspiratory dyspnea and noise resulting from an inability to abduct one or both arytenoid cartilages. Two unilateral arytenoidectomies were done following failure of laryngoplasty, and two bilateral arytenoidectomies were done to correct permanent arytenoid adduction caused by laryngeal ossification. The surgical procedure included submucosal dissection of the arytenoid cartilage and removal of the vocal fold, lateral ventricle (when present), and the arytenoid cartilage, excluding the muscular process. Excessive mucous membrane was pulled caudally from the opening of the larynx and carefully sutured to close the mucous membrane and smooth the rima glottis. Postoperative swelling was greatest between the 3rd and 7th days. Long‐term results included one horse returned to normal function with no noise, one horse returned to normal function but with respiratory noise, one horse returned to light riding with reduced noise, and one horse salvaged for pasture use.
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