الفهرس 
Title : Comparative study between endoscopic trans-canal underlay cartilage tympanoplasty using the partial thickness mosaic technique trans-perforation versus elevation of the posterior meatal wall
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Abstract
Aim of the work: To evaluate the endoscopic trans-canal trans perforation underlay cartilage tympanoplasty using the partial thickness mosaic technique by assessing the graft take rate and hearing results and time consuming to compare it to endoscopic trans-canal underlay cartilage tympanoplasty through elevation of the posterior meatal wall Patients and methods: Thirty patients were randomly divided into 2 equal groups. group 1 had endoscopic trans-canal trans perforation underlay cartilage tympanoplasty using the partial thickness mosaic technique while, group 2 had trans-canal underlay cartilage tympanoplasty using the partial thickness mosaic technique through elevation of the posterior meatal wall