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  • Title: Long-term follow-up of cochlear implant users with ossified cochlea.
    Author: Trinh BT, Bergeron F, Ferron P.
    Journal: J Otolaryngol; 2000 Oct; 29(5):279-84. PubMed ID: 11108486.
    Abstract:
    OBJECTIVE: Cochlear implantation surgery in ossified cochlea is a challenge, even for the experienced otologist. Short-term assessments of auditory perception show that implantation in partial or even extensive ossified cochlea could be achieved with varying success, but no long-term follow-up results have been published yet. DESIGN AND METHODS: This paper proposes a retrospective review of eight Nucleus cochlear implant users with ossified cochlea who have been followed on a 12- to 60-month period. MAIN OUTCOME MEASURE: Auditory performances of users are reported at each control on a scale of 100 units divided into 4 skill zones of 25 units based on Erber's proposition, that is, detection, discrimination, identification, and recognition. RESULTS: Three of the eight subjects showed some progression in their auditory performances during the follow-up. The five other subjects showed no long-term progress in their auditory performance. CONCLUSIONS: Open-set comprehension could be achieved with the insertion of 9 to 10 electrodes of the Nucleus device. Auditory performance in users with ossified cochlea seems to be influenced by the same factors as in users with patent cochlea.
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