[Surgery of the laryngeal framework: type I thyroplasty].

Eight type I thyroplasties were performed. All the patients had a breathy voice related with unilateral vocal cord paralysis. Several causes were involved. All 8 patients achieved good glottic closure and the free edges of the vocal cords mi closed uniformly. Acoustic parameters were studied using Dr. Speech version 2.0 for Windows. The SPSS program was used for statistical analysis. The study showed significant improvement in maximum phonation time, shimmer, and normalized noise energy. Modifications in the surgical technique are discussed.