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Cochlear implant magnet displacement with minor head trauma
James M Yun1, Michelle W Colburn, Patrick J Antonelli
1Departments of Otolaryngology and Communicative Disorders, University of Florida, Gainesville, FL 32610-0264, USA.
Summary
Magnet displacement is a new complication in pediatric cochlear implant (CI) recipients with removable magnets, often occurring after head trauma. This study describes the issue and its management in young males.
Area of Science:
- Otolaryngology
- Biomedical Engineering
- Pediatric Surgery
Background:
- Cochlear implants (CIs) now feature removable magnets for MRI compatibility.
- Magnet dislodgement presents a novel complication in CI recipients.
Purpose of the Study:
- To describe magnet displacement as a new complication in cochlear implants.
- To report on a treatment option for preventing recurrent magnet dislodgement.
Main Methods:
- Retrospective case series of 3 young males with CI magnet dislodgement.
- Comparison with institutional implant database records.
Main Results:
- Magnet displacement occurred in 14% of male pediatric CI recipients with removable magnets.
- Dislodgement happened 13-14 months post-implantation; magnets were replaced using dermal allografts.
- One patient experienced recurrent dislodgement 6 months after initial treatment.
Conclusions:
- Magnet displacement may be a common complication in pediatric CI patients with removable magnets, especially after minor head trauma.
- Further investigation into preventative strategies is warranted.