Postoperative and follow-up studies of spastic dysphonia patients treated by recurrent laryngeal nerve section.

Long-term results of surgical treatment of spastic dysphonia by RLN section are evaluated by means of perceptual psychophysical scaling and by the patients themselves. It is found that a significant reduction in spastic dysphonia symptoms occurs as a result of surgery, and that these results are maintained after long-term follow-up in the majority of patients. These experimental observations are in agreement with the subjective assessment of postsurgical communication by the patients involved in the study.