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Stability of the cochlear implant array in children
J T Roland1, A J Fishman, S B Waltzman
1Department of Otolaryngology, New York University Medical Center, New York 10016, USA.
The Laryngoscope
|August 26, 1998
Summary
Cochlear implant electrodes remain stable in young children, even with skull growth. This study confirms electrode array stability, alleviating concerns about implantation in pediatric patients.
Area of Science:
- Otolaryngology
- Pediatric audiology
- Neurosurgery
Background:
- Cochlear implantation in children under two years old was previously restricted due to concerns about electrode migration from skull growth.
- Recent advancements in pediatric cochlear implant performance necessitate re-evaluating age restrictions.
Purpose of the Study:
- To assess the long-term stability of cochlear implant electrode arrays in young children.
- To investigate the impact of skull growth on electrode position after implantation.
Main Methods:
- Prospective radiographic analysis of 27 children (aged 14 months to 5 years) implanted with Nucleus or Clarion cochlear prostheses.
- Radiographs taken intraoperatively and annually for up to 5 years, with additional imaging for performance changes.
- Computer graphics enhancement used to determine electrode array position relative to bony structures.
Main Results:
- No instances of electrode array migration were observed over the follow-up period.
- Radiographic analysis demonstrated consistent electrode placement despite ongoing skull development.
Conclusions:
- Cochlear implant electrode arrays exhibit stability in young pediatric patients.
- The findings alleviate concerns regarding skull growth affecting electrode position in pediatric cochlear implant recipients.