ABSTRACT Otosclerosis is a disease characterized by a new bone formation localized to the otic capsule. It causes progressive conductive, sensorineural or mixed type hearing loss. The diagnosis of otosclerosis can be made by a detailed history, physical examination, and odiometric evaluation. The treatment of choice is stapes surgery who did not accept using hearing aids. Stapedotomy and stapedectomy represent surgical procedures for managing the conductive hearing loss caused by otosclerosis.