Show simple item record

dc.contributor.authorBriggs, RJ
dc.contributor.authorTykocinski, M
dc.contributor.authorSaunders, E
dc.contributor.authorHellier, W
dc.contributor.authorDahm, M
dc.contributor.authorPyman, B
dc.contributor.authorClark, GM
dc.date.available2014-05-21T20:34:14Z
dc.date.issued2001-09
dc.identifierhttps://www.ncbi.nlm.nih.gov/pubmed/18792095
dc.identifier.citationBriggs, R. J., Tykocinski, M., Saunders, E., Hellier, W., Dahm, M., Pyman, B. & Clark, G. M. (2001). Surgical implications of perimodiolar cochlear implant electrode design: avoiding intracochlear damage and scala vestibuli insertion.. Cochlear Implants Int, 2 (2), pp.135-149. https://doi.org/10.1179/cim.2001.2.2.135.
dc.identifier.issn1467-0100
dc.identifier.urihttp://hdl.handle.net/11343/27582
dc.descriptionPublisher’s permission requested and denied.
dc.description.abstractOBJECTIVE: To review the mechanisms and nature of intracochlear damage associated with cochlear implant electrode array insertion, in particular, the various perimodiolar electrode designs. Make recommendations regarding surgical techniques for the Nucleus Contour electrode to ensure correct position and minimal insertion trauma. BACKGROUND: The potential advantages of increased modiolar proximity of intracochlear multichannel electrode arrays are a reduction in stimulation thresholds, an increase in dynamic range and more localized neural excitation. This may improve speech perception and reduce power consumption. These advantages may be negated if increased intracochlear damage results from the method used to position the electrodes close to the modiolus. METHOD: A review of the University of Melbourne Department of Otolaryngology experience with temporal bone safety studies using the Nucleus standard straight electrode array and a variety of perimodiolar electrode array designs; comparison with temporal bone insertion studies from other centres and postmortem histopathology studies reported in the literature. Review of our initial clinical experience using the Nucleus Contour electrode array. RESULTS: The nature of intracochlear damage resulting from electrode insertion trauma ranges from minor, localized, spiral ligament tear to diffuse organ of Corti disruption and osseous spiral lamina fracture. The type of damage depends on the mechanical characteristics of the electrode array, the stiffness, curvature and size of the electrode in relation to the scala, and the surgical technique. The narrow, flexible, straight arrays are the least traumatic. Pre-curved or stiffer arrays are associated with an incidence of basilar membrane perforation. The cochleostomy must be correctly sited in relation to the round window to ensure scala tympani insertion. A cochleostomy anterior to the round window rather than inferior may lead to scala media or scala vestibuli insertion. CONCLUSION: Proximity of electrodes to the modiolus can be achieved without intracochlear damage provided the electrode array is a free fit within the scala, of appropriate size and shape, and accurate scala tympani insertion is performed.
dc.languageeng
dc.publisherInforma UK Limited
dc.relation.ispartofScientific publications, vol.12, 2000-2001, no.1414
dc.relation.isversionofhttp://tinyurl.com/2abtyhk
dc.subjectcochlear implants
dc.subjectperimodiolar electrode
dc.subjectsurgery
dc.subjectintracochlear trauma
dc.titleSurgical implications of perimodiolar cochlear implant electrode design: avoiding intracochlear damage and scala vestibuli insertion.
dc.typeJournal Article
dc.identifier.doi10.1179/cim.2001.2.2.135
melbourne.source.titleCochlear Implants Int
melbourne.source.volume2
melbourne.source.issue2
melbourne.source.pages135-149
melbourne.publicationid2217
melbourne.elementsid248330
melbourne.contributor.authorBriggs, Robert
melbourne.contributor.authorTYKOCINSKI, MICHAEL
melbourne.contributor.authorClark, Graeme
melbourne.contributor.authorPYMAN, BRIAN
melbourne.contributor.authorDAHM, MARKUS
dc.identifier.eissn1754-7628
melbourne.accessrightsThis item is currently not available from this repository


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record