The journal Otolaryngology, head and neck Surgery (an official journal of the American Academy of Otorhinolaryngology) has published an article, in the February issue of 2017, which has reviewed 13 articles from all the world scientific literature of voice feminization.
A meta-analysis has been carried out to examine which technique is the most effective and with better phonatory results, that is, with which a greater increase of vocal tone is achieved.
A review of published papers, in which it is included the research of Dr. Juan Carlos Casado, it can be deduced that there are three main mechanisms to increase vocal tone:
1- Increase the tension of the vocal cords.
2- Shorten the length of the vocal cords.
3- Reduce the mass of the strings.
These mechanisms are those that are intended to be achieved with the different surgical techniques; for example, with the technique called Crico-Thyroid Approach, the vocal cord tension is increased; with the technique of Glotoplasty, the vocal cords are shortened and with the LAVA (Laser-Assisted Voice Adjustment) technique, vocal mass is reduced.
ANALYSIS OF THE RESULTS OF THE STUDY OBTAINED IN VOICE FEMINIZATION.
After an exhaustive comparative analysis, it has been seen that the group of techniques most used today are those that perform a shortening of the length of the vocal cords. And within this group of techniques, the so-called Wendler Glotoplasty modified by us (Dr. Casado et al, 2016) is one of the best results in voice feminization.
WHAT IS OUR TECHNIQUE FOR VOICE FEMINIZATION
To increase the vocal tone we used the surgical technique called Wendler’s Glotoplasty with personal modifications to modify the anatomy of the larynx, plus vocal therapy or postoperative speech therapy to change the behavior or vocal gesture. We believe that it is the most optimal method to achieve the voice feminization, that is, to achieve a more stereotypically female vocal tone in each phonation.