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Pediatric Cochlear ImplantationRadiologic Observations of Skull Growth
Jin Xu, MD;
Robert K. Shepherd, PhD;
Shi Ang Xu, MD;
H. Lee Seldon, PhD, MD;
Graeme M. Clark, PhD, FRACS
Arch Otolaryngol Head Neck Surg. 1993;119(5):525-534.
Abstract
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• We investigated the effects of long-term implantation of auditory prostheses on skull growth in young animals. Four monkeys were implanted with dummy cochlear implants at 6 months of age. To simulate implantation in children, the bed for the receiver-stimulator or interconnecting plug was drilled across a calvarial suture down to the underlying dura. Plain skull roentgenograms were periodically taken to monitor head growth for up to 3 years after implantation. These longitudinal measurements revealed no significant asymmetric skull growth. Postmortem measurements using computed tomographic scans confirmed these results and showed no significant difference in the intracranial volumes between the implanted and control sides of each animal or between experimental and nonimplanted control monkeys. These results suggest that long-term cochlear implantation in very young children will not cause any significant deformity of the skull.
(Arch Otolaryngol Head Neck Surg. 1993;119:525-534)
Author Affiliations
From the Department of Otolaryngology, University of Melbourne, Australia.
Footnotes
Accepted for publication October 30, 1992.
Reprint requests to Department of Otolaryngology, University of Melbourne, The Royal Victorian Eye and Ear Hospital, 32 Gisborne St, East Melbourne, Victoria 3002, Australia (Dr Xu).
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