Vocal fold immobility may be the result from neuromuscular damage and/or mechanical problems, including the disorders of central nervous system, peripheral nervous system, arytenoid joint fixation, or neuromuscular junction disease. The severity of symptoms varies which mainly depends on the degree of the injury, the position of the immobile vocal fold and the compensation of laryngeal function. The manifestations of unilateral vocal fold paralysis and arytenoid dislocation are similar, including different degrees of hoarseness, breathiness, vocal fatigue, aspiration, vocal fold hypomobility or immobility and glottal insufficiency. Bilateral vocal fold paralysis includes abductory type and adductory type, and bilateral abductor vocal fold paralysis is most common and usually accompanied by severe dyspnea and laryngeal stridor, while bilateral adductor vocal fold paralysis usually causes hoarseness and aspiration.
Strobolaryngoscopic video of left vocal fold paralysis (MP4 3770 kb)
Seven-month postoperative strobolaryngoscopic video of left vocal fold paralysis after injection of autogenous fat in paraglottic space (MP4 3013 kb)
Ten-year postoperative strobolaryngoscopic video of left vocal fold paralysis after injection of autogenous fat in paraglottic space (MP4 1908 kb)
Strobolaryngoscopic video of left arytenoid dislocation (MP4 1606 kb)
Strobolaryngoscopic video after 10 days following left arytenoid reduction (MP4 3249 kb)
Strobolaryngoscopic video of right arytenoid dislocation (MP4 3745 kb)
Strobolaryngoscopic video after 2 weeks following right arytenoid reduction (MP4 5817 kb)