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Surgical anatomy of the round window with special reference to cochlear implantation

  • Burkhard K. H. Franz (a1), Graeme M. Clark (a2) and David M. Bloom (a2)

Abstract

When the multi-channel cochlear implant electrode is inserted into the scala tympani through the round window the operation is best performed via a posterior tympanotomy. The view of the round window membrane, however, is incomplete because of its orientation and the fact that it has a conical shape. Nevertheless, a good view along the basal turn is obtained after the antero-inferior overhang of the round window niche and the crista fenestrae have been removed. It might be damaging to drill away the postero-superior overhang as the osseous spiral lamina lies extremely close to the round window membrane.

Copyright

Corresponding author

Graeme M. Clark, Ph.D., F.R.C.S., Department of Otolaryngology, University of Melbourne, Parkville 3052, Australia.

References

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The Journal of Laryngology & Otology
  • ISSN: 0022-2151
  • EISSN: 1748-5460
  • URL: /core/journals/journal-of-laryngology-and-otology
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