What is Otosclerosis?
Condition where sound is blocked from reaching the inner ear. The last middle ear bone, the stapes or “stirrup,” becomes fixed. Because it is fixed, sound energy from the vibrating eardrum cannot be transferred to the inner ear. This results in a conductive hearing loss which can be treated with hearing aids or surgery.
Outlined arrow points to plaque of otosclerosis on the hearing portion of the inner ear, the cochlea. Small arrow points to the oval window and stapes (not well visualized in this example). Case courtesy of A.Prof Frank Gaillard, Radiopedia