Abstract
This study looks at the rates of explantation and reimplantation surgery in adult cochlear implant patients between 1990 and 2002 and also evaluates the surgical and audiological implications. 15 (5.5%) out of 272 adult cochlear implantees (288 cochlear implants: 282 Nucleus, 4 MED-EL Combi 40, 2 Clarion) needed their devices removed (explanted). 14 out of the 15 patients selected received explantation, reimplantation or revision surgery. The main reasons included device failure (2.2%), wound and flap problems (1.8%), and electrode extrusion (0.73%). Wound and flap problems were more common with larger skin incisions. In staged reimplantations, reinsertion was made easier if the electrode was retained in situ until reimplantation. Performance of the replacement device was not related to the aetiology of deafness or to the cause of explantation. These data will be useful in counselling patients.
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