Methods The unilateral vocal cord, laryngeal ventricle, partial anteroinferior portion of ventricular band and the homolateral inner perichondrium of the thyroid cartilage were excised.
BACKGROUND: Various investigative tools, including direct visualization with stroboscopy and indirect observation with glottography, have been widely used for the observation of vocal fold vibration.
Thyroplasty has been used to solve voice disorders to a great extent for quite some time.Yet, there are very few reports regarding treating mutational falsetto with thyroplasty.
The issue of vocal cords vibrating in voice training is easy to lead to making voice dark,dry and coarse,raucity even caused pathological changes such as vocal cords polyp.
Methods Video-stroboscopy was used to reveal the laryngeal cavity and dynamic changes of the vocal fold, and sound spectrograph was used to examine audio frequency, pitch and width.