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Cochlear implants for congenital deformities

Published online by Cambridge University Press:  29 June 2007

P. D. Phelps
P. D. Phelps*
Affiliation:
London
*
Consultant Radiologist, The Royal National Throat, Nose and Ear Hospital, Gray's Inn Road, London WCIX 8DA.
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Abstract

There have been few accounts of multi-channel cochlear implants in patients with congenital structural deformities of the inner ear which are associated with severe and sometimes progressive deafness. These malformations can now be recognized easily on 2 plane thin section high resolution CT studies which are mandatory for the pre-implantation assessment. However, no attempt seems to have been made to describe which of these malformations would be suitable for an implant or for which would this procedure be contra-indicated. True Mondini deformity of both the cochlea and dilated vestibular aqueduct type would appear suitable for a multi channel implant, but this type of implant should not be used for a primitive otocyst, severe labyrinthine dysplasia or the characteristic X-linked deformity.

Keywords

TomographyX-raycomputedCochlear implantsCongenital defects

Information

Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 106 , Issue 11 , November 1992 , pp. 967 - 970
Copyright
Copyright © JLO (1984) Limited 1992

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