Long-Term Hearing Outcomes Following Cochlear Implantation in Far Advanced Otosclerosis

Abstract

Objective: This study aims to evaluate the long-term auditory performance at 5 years in patients with far advanced otosclerosis (FAO) after cochlear implantation compared to controls. Study Design: A retrospective cohort study. Setting: This study was conducted at a single tertiary medical center. Methods: Patients with FAO were compared to a control group of postlingually deafened patients, selected from the same cochlear implant database. The following data were collected from medical records: age, sex, etiology, duration of hearing deprivation, prior stapes surgery, age at implantation, side of implantation, computed tomography scan findings, surgery details, postoperative complications, and hearing test results. Results: A total of 41 patients with otosclerosis and 73 control cases were included in this study. The mean speech comprehension score at 5 years was 48.63% ± 24.66 in the otosclerosis group compared to 48.17% ± 23.08 in the control group (P =.76). Cochleostomy (P =.01), scala vestibuli insertion (P