Volume 133, Issue 2 p. 275-277
Original Articles

Cochlear Implant Magnet Displacement With Minor Head Trauma

James M. Yun MD

James M. Yun MD

Departments of Otolaryngology and Communicative Disorders, University of Florida, Gainesville, Florida

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Michelle W. Colburn AuD

Michelle W. Colburn AuD

Departments of Otolaryngology and Communicative Disorders, University of Florida, Gainesville, Florida

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Patrick J. Antonelli MD

Corresponding Author

Patrick J. Antonelli MD

Departments of Otolaryngology and Communicative Disorders, University of Florida, Gainesville, Florida

Reprint requests: Patrick J. Antonelli, MD, Department of Otolaryngology, University of Florida, Box 100264, 1600 SW Archer Road, Gainesville, FL 32610-0264. E-mail address: [email protected].Search for more papers by this author
First published: 17 May 2016
Citations: 1

Presented at the Annual Meeting of the American Academy of Otolaryngology-Head and Neck Surgery, New York, NY, September 19-22, 2004.

Abstract

Objectives:

Manufacturers have introduced cochlear implants (CIs) with removable magnets to allow for magnetic resonance imaging after placement. The purpose of this study was to describe magnet displacement as a new CI complication and to suggest apossible treatment option to prevent its recurrence.

Study Design:

Retrospective case series.

Methods:

The records of 3 young males who experienced CI magnet dislodgement were reviewed and compared against records from the institutional implant database.

Results:

Magnet displacement was observed only in young males (14% of male children) who received CI with removable magnets. This occurred 13-14 months after CI placement. Magnets were replaced under general anesthesia, and the scalp was bolstered with a dermal allograft. Recurrent magnet dislodgement was encountered in 1 patient, 6 months later.

Conclusions:

Magnet displacement may be a relatively common complication after minor head trauma in pediatric patients with certain CIs that have removable magnets.