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Arytenoid cartilage dislocation is a known complication of tracheal intubation and is also a type of laryngeal injury. Although spontaneous recovery has been reported, most patients require reduction via pharyngoscopy under general or neuroleptic anesthesia, and some must be treated by open reduction such as laryngoplasty. We report 8 cases of arytenoid cartilage dislocation between August 2003 and August 2004. Excluding 3 patients who recovered spontaneously, we conducted reduction under local anesthesia as an ambulatory procedure in the other 5 with anterior dislocation, i.e., 2 men and 3 women aged 53 to 75 years old. Of these 5, dislocation occurred after tracheal intubation in 4, and in 1 after wearing a laryngeal mask. The outcome was favorable in all 5. Surgery was conducteded after a fiberscope was inserted nasally and a urethral balloon catheter was inserted via the other nasal cavity under topical anesthesia with 4% lidocaine for both nasal cavities and the larynx. While monitoring the larynx, we expanded the balloon and pulled it away from the glottis. The expanded balloon was then placed at the arytenoid region for a few seconds. This procedure was repeated several times to achieve reduction. Three patients recovered well within 1 to 2 weeks of the first reduction, while 2 requierd a second reduction because of insufficient improvement after the first. These two both showed improved vocal cord movement and recovery from hoarseness within 1 to 2 weeks after the second reduction. We conducted 7 reductions without complications in any patient. Our approach is usable in the ambulatory setting, and is simple, minimally invasive, and effective. We consider it to be useful treatment for anterior arytenoid cartilage dislocation.

Fiberscopic Reduction under Local Anesthesia for Anterior Arytenoid Cartilage Dislocation