title: Closed reduction for arytenoid dislocation under local anesthesia.
abstract: CONCLUSIONS
  Closed reduction under local anesthesia continues to be an effective and well-tolerated method for treating arytenoid dislocation. Bilateral arytenoid dislocation is an uncommon occurrence, and the principles of management are the same as for unilateral dislocation.
  
  
  OBJECTIVE
  To evaluate the treatment outcomes of closed reduction for arytenoid dislocation under local anesthesia and to conduct an exhaustive review of the literature on bilateral arytenoid dislocation.
  
  
  METHODS
  Thirty-three patients with arytenoid dislocation were treated with closed reduction under local anesthesia. Arytenoid motion, GRBAS (grade, roughness, breathiness, asthenia, strain), maximum phonation time (MPT), self-assessed Voice Handicap Index (VHI), and acoustic voice analysis were used to evaluate the clinical outcomes.
  
  
  RESULTS
  Following closed reduction, 33 patients were divided into a 'satisfied' group (n = 26) and a 'dissatisfied' group (n = 7). In the 'satisfied' group, G, R, B, A, MPT, VHI, jitter%, shimmer%, normalized noise energy (NNE), and noise-to-harmonic ratio (NHR) were significantly improved compared with measurements taken before closed reduction (p < 0.05). The results for F0 and S score were not significantly different. In the 'dissatisfied' group, VHI, MPT, F0, and shimmer% were not significantly different 1 month after reduction. However, statistically significant change was observed in jitter% and NHR.
authors.affiliation: a Department of Otolaryngology-Head and Neck Surgery , Eye, Ear, Nose and Throat Hospital, Fudan University , Shanghai , PR China ;
authors.forename: Luhong
authors.initials: L
authors.lastname: Cao
authors.affiliation: a Department of Otolaryngology-Head and Neck Surgery , Eye, Ear, Nose and Throat Hospital, Fudan University , Shanghai , PR China ;
authors.forename: Xiufa
authors.initials: X
authors.lastname: Wu
authors.affiliation: a Department of Otolaryngology-Head and Neck Surgery , Eye, Ear, Nose and Throat Hospital, Fudan University , Shanghai , PR China ;
authors.forename: Wenjing
authors.initials: W
authors.lastname: Mao
authors.affiliation: b Department of Surgery, Division of Otolaryngology-Head and Neck Surgery , University of Wisconsin School of Medicine and Public Health , Madison , WI , USA.
authors.forename: Cameron
authors.initials: C
authors.lastname: Hayes
authors.affiliation: a Department of Otolaryngology-Head and Neck Surgery , Eye, Ear, Nose and Throat Hospital, Fudan University , Shanghai , PR China ;
authors.forename: Chunsheng
authors.initials: C
authors.lastname: Wei
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000772:Anesthesia, Local; D001193:Arytenoid Cartilage / Q000293:injuries*; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D019838:Neck Injuries / Q000628:therapy*; D012189:Retrospective Studies; D055815:Young Adult
keywords: Arytenoid cartilage; endoscopic assessment; hoarseness; vocal fold movement; voice outcomes