Voice disorders Treatment

Operation	VFS AAS	Cricothyroidopexy	Thyroid Cartilage and Vocal Fold Reduction
Principle of making high pitch	Shortening of vocal fold	Tension of vocal fold	Removal of partial vocal fold and larynx
Surgical procedure	Suture of vocal fold membrane	Pulling the thyroid and cricoids cartilage, and fix them	Removal of thyroid cartilage and vocal fold
Skin incision	No	Yes	Yes
Hemorrhage	No	Yes	Yes
Anesthesia	General	General	General
Voice quality	Natural voice	Falsetto	-
Singing	Possible in female voice range	Impossible	High Falsetto
Complications	None	Inflammation, Unstable increase of pitch	Limited
Misc.	Pitch range is controllable	Frequent re-operation	Inflammation, Granuloma, Excessive changes of voice color, Unnatural voice