otosclerosis
Pronunciation: oh-toe-skler-OH-sis
Progressive middle ear disease causing stapes bone fixation and conductive hearing loss, often hereditary.
Full Definition
Otosclerosis is a localized bone disease affecting the otic capsule, most commonly causing fixation of the stapes footplate in the oval window. This condition typically presents as progressive conductive hearing loss beginning in early adulthood, often with a family history and female predominance. Audiologically, otosclerosis produces characteristic air-bone gaps with normal tympanometry and absent acoustic reflexes. The condition may progress to involve the cochlea (cochlear otosclerosis), causing sensorineural hearing loss components. Treatment options include hearing aids, stapedectomy surgery, or fluoride therapy in active cases.
Usage
Usage note: Distinguish from 'otospongiosis' which refers to the active phase; 'otosclerosis' encompasses both active and inactive phases.
In Context
- "The audiogram pattern suggested otosclerosis, confirmed by absent acoustic reflexes and normal tympanometry." — Diagnostic evaluation report
- "Stapedectomy consultation was recommended for the patient with bilateral otosclerosis." — Treatment planning documentation