Some modifications were proposed to the procedure to simplify it and to improve functional results. Most important one is the one proposed by Guerrier. In the refined procedure we describe, we didn't do any -pexy to conserved as near as possible from normality morphology and physiology of pharyngolaryngeal unit.
Dynamics is preserved by keeping jointly the laryngotracheal tract.
In addition, we avoid doing a tracheotomy. The comfort of patients without tracheotomy was greatly increased with a low risk of pneumonia. Binucleate cells most frequently formed by the fusion of two sister cells born in a previous mitosis. The study of binucleate cells has shown that they are a cellular type able to successfully undergo mitosis. However, the mitosis may be bipolar, tripolar or multipolar.