Effect of ALA on Retrolingual Collapse in Patients With Multilevel Obstructive OSA

Starting with bilateral tonsillectomy, The palatopharyngeal muscle (PPM) raised and advanced to be fixed to the pterygomandibular raphe, The posterior part of the PPM, together with its attached mucosa, was then advanced superolaterally behind the palatoglossus muscle to be hooked up to the levator veli palatini muscle