抄録
Type I thyroplasty and fat injection laryngoplasty are safe and useful methods for patients who suffer from breathy hoarseness due to unilateral vocal fold paralysis without any level difference between bilateral vocal processes. For these operations, various materials and procedures have been devised and used. However, the variability of injection materials and surgical procedures among facilities causes confusion in evaluating each treatment. In the present study, we laid out the basic methods and indications of these operations, and we insisted that satisfactory phonation is obtained by either the adequate material in the adequate place for type I thyroplasty or the accurate injection for fat injection laryngoplasty.