Dr. Hyung-tae Kim, director of Yeson Voice Center, presented the new methods for laryngoplasty - "vocal fold shortening and anterior commisure advancement' - at the Voice Foundation Association.
“The Voice Foundation’s Annual Symposium: Care of the professional voice” which was held from May 29 to June 3, 2007.
The vocal fold shortening and the advancement of anterior commisure are high-technology vocal fold surgeries newly developed at Yeson Voice Center.
These advanced surgical methods can alter the tone and pitch of the voice by controlling the length of the vocal fold and advancing the anterior commissure.
The presentation of these new techniques have attracted the attention of many voice specialists.
Videos of the voice changes in patients before and after the surgery can be seen at
"Yeson Clinic/Voice Clinic/Voice Feminization Surgery" of the Yeson website.
The contents of the document are as follows.
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The Voice Foundation's 36th Annual Symposium : Care of the Professional Voice
Tuesday, May 29, 2007 - Sunday, June 3, 2007
The Westin Philadelpha
Philadelphia, Pennsylvania, USA
Title : The vocal fold AP shortening and advancement of ant. commissure for feminization of the voice
Abstracts
Objectives : To evaluated results of the modification of vocal fold shortening surgery in patients with androphonia and male-to-female transsexual patients.
Method : Retrospective study of thirty-three patients who underwent the vocal fold shortening between 2004 and 2006 have been done. The modified vocal fold shortening has been performed to patients with androphonia(n=8), androgenital syndrome(n=2), aplastic anemia treated with androgen(n=3) and to male-to-female transexual patients(n=20). The subjective and perceptual assessment, aerodynamic and acoustic assessment, and videostroboscopic assessment were evaluated before and after phonoplasty. All patient was performed voice rehabilitation program after postoperative 2 months.
Results : The average preoperative F0 was 137.3Hz and the mean postoperative F0 achieved was 211.5Hz. Duration of follow up ranged from 6 to 28 months. The average increase in F0 was 74.2 Hz after phonoplasty and voice rehabilitation program. In subjective asssessment, voice feminity was increased. Acoustic assessment presented sPPQ, sAPQ, NHR showed within normal range and subglottic pressure and regularity of mucosal wave of vocal fold maintained in normal range. These fiindings suggest that patients have unartificial voice and could make soft phonation after surgery.
Conclusion : The vocal fold AP shortening and advancement of anterior commissure could be considered an effective method to perform for voice feminization with unartifial voice.