The new method of voice feminization surgery, called “Vocal Fold Shortening and Advancement of Anterior Commissure”, is the world’s first treatment that does not incise the skin and get the same result of modifying the vocal cord to a female shape using an endoscope. This procedure which was developed by Yeson Voice Center was presented at the Voice Foundation Association in the United States on May 29, 2007.

Surgical principle & process
Voice pitch determines by the size and the length of vocal fold. To help you understand better, it is the same logic with a musical instrument, guitar. Thick and long string makes a low pitch, thin and short makes a high pitch. Male and female vocal fold sizes are different; male’s is thick and long, but female’s is thin and short. VFS AAC (Vocal Fold Shortening and Advancement of Anterior Commissure) was developed by Yeson Voice Center. The surgical procedure is dissecting the anterior 1/3 portion of vocal fold membrane, then it makes the high voice tone.

There are 5 major methods used for Male to Female Voice Phonoplasty.
1. Cricothyrodiopexy
2. Laser assisted thyro-arytenoid muscle resection
3. Laser assisted voice adjustment: LAVA
4. Anterior Web Creation 
5. thyroid cartilage and vocal fold reduction