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Author Spotlight: Advancements in Impedance Monitoring for Cochlear Implant Surgery

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Cochlear Reimplantation Following Device Dysfunction: A Retrospective Cohort Study.

Mélyssa Fortin¹, Richard Bussières¹, Mathieu Côté¹

¹Departments of Otolaryngology-Head and Neck Surgery.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology

|December 16, 2025

Summary

Cochlear reimplantation rates were 6.6% over 40 years, driven by device failures and recalls. Improving cochlear implant reliability is crucial to minimize reimplantation burdens.

Keywords:

Cochlear reimplantation Implant reliability Manufacturer recall Technological failure

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Last Updated: Jan 8, 2026

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Published on: March 8, 2022

Area of Science:

Otolaryngology
Biomedical Engineering
Medical Device Technology

Background:

Cochlear implantation is a life-changing surgery for hearing loss.
Device longevity and potential for reimplantation are critical considerations.

Purpose of the Study:

To analyze the incidence and reasons for cochlear reimplantation over four decades.
To investigate the impact of technological failures and manufacturer recalls on reimplantation rates.

Main Methods:

Retrospective cohort study of 3885 cochlear implantations over 40 years.
Analysis of 257 reimplantations, stratified by age and manufacturer.
Evaluation of reasons for explantation, including recalls and hard failures.

Main Results:

Overall reimplantation rate was 6.6%, with similar rates in children (6.5%) and adults (6.7%).
Advanced Bionics (12.6%) and Oticon (8.9%) had higher reimplantation rates compared to Cochlear (3.4%) and MED-EL (1.8%).
Device recalls and hard failures accounted for 70.8% of reimplantations, occurring on average 6.5 years post-implantation.

Conclusions:

Cochlear reimplantation is complex, influenced by both device technology and patient factors.
Improving cochlear implant reliability and care pathways is essential to reduce the need for reimplantation.