Cochlear otosclerosis: a review of audiometric findings in 150 cases.

Audiometric findings and histories were reviewed for 150 patients diagnosed by polytomography as probable cochlear otosclerosis cases. Most patients were under 65 and had a relatively short duration of hearing impairment. Most had a mild to moderate loss with excellent speech discrimination. Seventy-five percent of the ears had acoustic reflex findings indicative of minimal stapes fixation. We recommend the acoustic reflex test for identification of patients with probable cochlear otosclerosis.