XXXIV Otosclerosis and the Inner Ear

Abstract
The study of 34 temporal bones from 21 patients with otosclerosis indicates that the sensorineural hearing loss which accompanies otosclerosis is almost always caused by pathological changes unrelated to the otosclerotic lesion. Only rarely does otosclerosis cause inner ear changes which result in sensorineural deafness, but when it does happen the hearing loss is severe. The following conditions may prevail: no inner ear pathology explains the sensorineural hearing loss, there is adequate pathology to explain the sensorineural hearing loss but it does not appear to be related to otosclerosis, there are pathological changes which are due to otosclerosis but are not adequate to explain the sensorineural hearing loss, or there are a few otosclerotics in which the lesion has caused inner ear pathology and resulted in sensorineural hearing loss.

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