Clinical Application of Electromyography in Vocal Fold Mobility Disorders

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Abstract
Some salient problems concerning the diagnosis and prognosis of vocal fold mobility disturbances are briefly outlined. The application of laryngeal electromyography in such cases is recommended. A brief review of EMG findings in the normal and diseased neuro-muscular system is given. In the present study electromyographic investigations of the laryngeal muscles were made of 13 patients (5 males and 8 females) with ages ranging from 22 to 70 years. Their clinical diagnoses included a variety of etiological factors. The posterior crico-arytenoid, thyro-arytenoid and crico-thyroid muscles were routinely examined. A method for the performance of these tests, in the form of an initial sitting and repeated follow-up control studies, is given. The clinical versus EMG findings are analysed. The criteria of neuropathic changes in laryngeal electromyograms are described and their significance is discussed.

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