Acute phase: otospongiosis - resorption of bone

Chronic phase: otosclerosis - sclerosis of bone

65% females & 80% of cases are bilateral

Onset during the 2nd and 3rd decades

Fenestral otosclerosis (most common)

- Conductive hearing loss

- Fixation of the footplate of the stapes at oval window

- Surgical correction possible

Retrofenestral (cochlear) otosclerosis (otospongiosis)

- Sensorineural hearing loss

- Cochlear implantation does not work

{To return to cases, use the "Back " button
on the Toolbar or under the Go menu}