Fiberscopic Reduction under Local Anesthesia for Anterior Arytenoid Cartilage Dislocation

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  • Abe Koichi
    Department of Otolaryngology-Head and Neck Surgery, Jichi Medical University
  • Nishino Hiroshi
    Department of Otolaryngology-Head and Neck Surgery, Jichi Medical University
  • Makino Nobuko
    Department of Otolaryngology-Head and Neck Surgery, Jichi Medical University
  • Ishikawa Kazuhiro
    Department of Otolaryngology-Head and Neck Surgery, Jichi Medical University
  • Ishikawa Kotaro
    Department of Otolaryngology-Head and Neck Surgery, Jichi Medical University
  • Imai Keiko
    Department of Otolaryngology-Head and Neck Surgery, Jichi Medical University
  • Ichimura Keiichi
    Department of Otolaryngology-Head and Neck Surgery, Jichi Medical University

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Other Title
  • 前方型披裂軟骨脱臼症に対する局所麻酔ファイバースコープ下整復術
  • ゼンポウガタ ヒレツ ナンコツ ダッキュウショウ ニ タイスル キョクショ マスイ ファイバースコープ カ セイフクジュツ

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Abstract

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.<br>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.<br>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.<br>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.<br>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.

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