Related Experiment Video
Updated: Oct 25, 2025
Author Spotlight: Advancements in Impedance Monitoring for Cochlear Implant Surgery
Published on: August 4, 2023
Magnet and receiver-stimulator displacement after cochlear implantation: Clinical characters and management
Asma Alahmadi1, Saad Alenzi1, Mohammed Alsheikh1
1From the Department of Otolaryngology Head & Neck Surgery (Alahmadi), Ministry of Health, from the Head and Neck Skull Base Health Centre (Alghamdi), from the Department of Otology and Skull Base Surgery (Badr), King Abdullah Medical City, Makkah; from the Department of Otolaryngology, Neurotology & Skull Base Surgery (Alenzi), King Abdullah Ear Specialist Center, King Saud University, Riyadh, from the Department of Otolaryngology, Neurotology & Cochlear Implant (Alsheikh), Royal Commission Hospital, Jubail, Kingdom of Saudi Arabia; and from the Faculty of Medicine (Morra), AlAzhar University, Cairo, Egypt.
Objectives:
To systematically review the occurrence of magnet or receiver/stimulator displacement following cochlear implant (CI) placement complication and evaluate the existing literature on this topic.
Methods:
A systematic literature search was conducted using PubMed, Scopus, Web of Science, Virtual Health Library (VHL), and Cochrane Library. Original studies reporting cases of magnet or receiver-stimulator migration occurring as a complication after CI placement were included. The quality of the included studies was evaluated using the National Institutes of Health Quality Assessment Tool for observational studies and CARE checklist for case studies.
Results:
A total of 36 studies, including 6469 patients, were included. Magnet migration was reported in 82 (1.3%) patients, while receiver/stimulator was reported in 4 (0.1%) cases. The cause of magnet migration was identified in 78 cases; MRI-induced movement was the most frequently reported cause (n=43, 55.1%), followed by head trauma (n=25, 32.1%). A total of 20 studies involving 35 patients with magnet migration performed skull radiography to diagnose magnet migration. Revision/exploratory surgery with surgical repositioning or replacement was the most frequent management procedure (n=46).
Conclusions:
Further research on magnet pocket design and standard protocols for MRI in CI users is needed. Early diagnosis of magnet migration and instant referral to specialized CI centers is necessary for proper management and prevention of major complications. PROSPERO REG. NO. CRD: 42020204514.
More Related Videos
07:00Electrically Evoked Stapedius Reflex Measurements in Cochlear Implantation and Its Application in the Postoperative Fitting Process
Published on: June 21, 2024
03:49Author Spotlight: Optimizing EAS with Long Electrodes for Enhanced Cochlear Coverage and Hearing Preservation
Published on: October 11, 2024