ABSTRACTAudiometric 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.