A systematic review of the different surgical techniques to increase vocal tone has recently been published in the journal Otolaryngology, Head and Neck Surgery (what is known in the medical world as “Voice Feminization“).
REVISED THE RESEARCH WORK OF DR. CASADO ABOUT VOICE FEMINIZATION
In this article, which has been published on February 2017, a meta-analysis has been performed to find out which technique is the most effective and with better phonatory results with which a greater increase in vocal tone is achieved.
After applying different inclusion and exclusion criteria, 13 articles have been reviewed throughout the scientific literature world of voice feminization. The authors consider that these 13 research papers are those that meet the optimal conditions for their methodology and results presentation.
From what is published in this review it follows that there are three main mechanisms to increase vocal tone:
- Increase the tension of the vocal cords
- Shorten the length of the vocal cords
- Reduce the mass of the cords
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.
TECHNIQUE OF DR. CASADO AS ONE OF THE BEST RESULTS IN VOICE FEMINIZATION
After performing a comparative analysis it has been seen that the group of techniques most used at the moment are those that consists of a shortening of the length of the vocal cords. And within this group of techniques, the Wendler glotoplasty modified by us (Casado et al, 2016) is the one with the most positive results as it can be seen in the attached table
In this way it is demonstrated that our technique is within the ones in which the best results (greater increase of vocal tone) are obtained compared to the one of other authors of the rest of the world in voice feminization.