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Related Experiment Videos

Cochlear implantation in cochlear otosclerosis.

A H Marshall1, N Fanning, S Symons

  • 1Department of Otolaryngology--Head and Neck Surgery, Sunnybrook and Women's College Health Sciences Centre, Toronto, Ontario, Canada. ahmarshall@rogers.com

The Laryngoscope
|October 14, 2005
PubMed
Summary

Cochlear implantation outcomes in otosclerosis are comparable to controls, even with prior surgery. Severe otosclerosis poses a risk of facial nerve stimulation, particularly with specific electrode types.

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Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Medical Imaging

Background:

  • Otosclerosis, a bone disease affecting the otic capsule, can complicate cochlear implantation.
  • Previous surgery and the extent of otosclerosis may impact implant performance.

Purpose of the Study:

  • To correlate cochlear implant performance in otosclerosis patients with control groups.
  • To assess the impact of otic capsule involvement severity and prior ipsilateral surgery on implant outcomes.
  • To evaluate programming issues and their relation to otosclerosis.

Main Methods:

  • A retrospective case-controlled study of 30 individuals with otosclerosis undergoing cochlear implantation.
  • High-resolution computed tomography (HRCT) scans graded for otosclerosis severity.

Related Experiment Videos

  • Comparison of implant performance, programming visits, and electrode deactivations with matched controls.

    • Main Results:

    • Implant performance in otosclerosis patients did not differ significantly from controls.
    • Prior ipsilateral surgery did not affect implant performance.
    • Programming difficulties and electrode deactivations were comparable between groups.
    • Facial nerve stimulation occurred exclusively in severe otosclerosis (grade 3) with non-modiolar hugging electrodes.

    Conclusions:

    • Patients with otosclerosis can expect similar cochlear implant benefits as non-otosclerosis patients, irrespective of prior surgery or disease severity.
    • Severe otosclerosis (grade 3) presents a significant risk for facial nerve stimulation, especially with non-modiolar hugging electrodes.