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Updated: Jan 21, 2026

Robotic Cochlear Implantation for Direct Cochlear Access
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Extra-Cochlear Insertion in Cochlear Implantation: A Potentially Disastrous Condition.

Emine Deniz Gözen1, Fırat Tevetoğlu1, Haydar Murat Yener1

  • 1Department of Otorhinolaryngology, İstanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, İstanbul, Turkey.

The Journal of International Advanced Otology
|July 27, 2019
PubMed
Summary
This summary is machine-generated.

Cochlear implantation electrode misplacement is rare but serious. This study found that extra-cochlear insertion in three patients was successfully treated with revision surgery, avoiding complications.

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Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Medical Device Technology

Background:

  • Cochlear implantation is a vital auditory rehabilitation technique for pediatric and adult patients.
  • While generally safe, intraoperative complications, including electrode misplacement, can occur.

Observation:

  • A retrospective analysis of 423 cochlear implantations identified three cases of extra-cochlear electrode insertion.
  • Misplacement occurred in the internal acoustic canal, superior semicircular canal, and internal carotid artery canal.

Findings:

  • All three patients with extra-cochlear electrode insertion underwent successful re-implantation.
  • No complications were observed following the revision surgeries.

Implications:

  • This case series demonstrates that rare electrode misplacements during cochlear implantation can be effectively managed.
  • A multidisciplinary approach is crucial for successful treatment and avoidance of adverse outcomes.