The Narrow Internal Auditory Canal in Children: A Contraindication to Cochlear Implants
- 1 March 1989
- journal article
- case report
- Published by Wiley in Otolaryngology -- Head and Neck Surgery
- Vol. 100 (3), 227-231
- https://doi.org/10.1177/019459988910000310
Abstract
We suggest a new explanation for the lack of auditory response to electric stimulation in children with cochlear implants: The very narrow internal auditory canal, 1 to 2 mm in diameter, and the probable absence of the cochlear nerve. This defect can be seen on high-resolution computed tomographic x-ray studies and may represent aplasia of the auditory-vestibular nerve. We report on eight children with this anomaly, three of whom have received implants and failed to respond with a sensation of sound. Identification of this problem on screening x-ray films is a contraindication to cochlear Implantation for auditory stimulation.Keywords
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