The Diagnosis and Treatment of Arytenoid Dislocation

Vocal fold paralysis and arytenoid dislocation are the differential symptoms for unilateral vocal movement disorder. However, their diagnosis is difficult. To diagnose dislocation, it necessary to understand movements characteristic of paralysis. A particularly important finding passive gliding that displaced in cranial direction during phonation. The presence this diagnostic rather than dislocation. number previous reports on have diagnosed as In Japan, term ‘fixation’ often used describe position paralyzed folds, ‘mid-position fixation’ or ‘sub-median fixation’. There seems be a misconception ‘paralyzed cords immobilized’. case by contrast, muscular process unable move beyond midline articular surface, severely restricted immobile. It has been misunderstood immobility while wobbling (passive movement), immobilization inability move. Dislocations previously divided into two categories anterior posterior dislocations, but vertical dislocations not mentioned. past reports, terms ‘anterior’,‘posterior’,‘medial’, ‘lateral’ refer these do indicate direction. We cricoid facet four areas: mediocaudal, laterocaudal, mediocranial laterocranial. published recurrent adductor branch 2010. Gradually, concept partial laryngeal palsy become more widespread. Looking at may included many studies diagnosing (mediocranial). Understanding characteristics crucial. three-dimensional arrangement cartilage disorder clarifying