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February 1969

Sensorineural Hearing

Author Affiliations

From the Department of Otolaryngology, The University of Chicago (Dr. Naunton) and the Department of Radiology, University of Illinois, Chicago (Dr. Valvassori).

Arch Otolaryngol. 1969;89(2):372-376. doi:10.1001/archotol.1969.00770020374024

T HE OCCURRENCE of sensorineural hearing loss in otosclerosis in excess of that commonly accepted as age change is a puzzling problem. In the course of tomographic studies of the ears of patients with fenestral otosclerosis, we have observed changes in the cochlear capsule resembling those observed and demonstrated histologically in such pathological conditions as osteogenesis imperfecta, Paget's disease, syphilis, etc. The first purpose of this paper is to examine the correlation between fenestral changes and nonfenestral cochlear capsule changes; a second purpose is to correlate audiometric findings with observed capsular changes; a third purpose is to determine the correlation between fenestral involvement, capsular findings, and hearing improvement following surgery.

Procedure  Ninety cases of surgically proven otosclerosis were used in this study. The ages of the patients ranged between 18 and 70 years. It may be assumed that in the presence of bilateral disease, and in the absence of any

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