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[Multi-channel cochlear implant in cochlear ossification].

E Pasanisi1, A Bacciu, V Vincenti

  • 1Dipartimento di Scienze Otorino-Odonto-Oftalmologiche e Cervico-Facciali, Sezione di Otorinolaringoiatria e Microchirurgia Otologica e Otoneurologica, Università di Parma. enrico.pasanisi@unipr.it

Acta Otorhinolaryngologica Italica : Organo Ufficiale Della Societa Italiana Di Otorinolaringologia E Chirurgia Cervico-Facciale
|August 14, 2002
PubMed
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Cochlear implants (C.I.) can now be successfully implanted even with cochlear ossification, using various surgical techniques. Patients with moderate ossification achieved significant word recognition, demonstrating the efficacy of these advanced C.I. procedures.

Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Audiology

Background:

  • Cochlear ossification was previously a contraindication for cochlear implants (C.I.).
  • Advancements in surgical techniques now allow C.I. in cases of cochlear ossification.
  • Various methods exist to manage different degrees of ossification.

Purpose of the Study:

  • To report the experience of cochlear implantations in patients with varying degrees of cochlear ossification.
  • To evaluate the hearing outcomes of these patients.

Main Methods:

  • Surgical techniques included cochleostomy, electrode insertion into the scala vestibuli, and a circummodiolar tunnel technique.
  • 15 patients with different levels of cochlear ossification underwent C.I.
  • Hearing tests were conducted at 12-month follow-up (or 3 months for massive ossification).

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Main Results:

  • Patients with round window/scala tympani ossification averaged 61.6% (2-syllable words) and 59% (words in phrases) recognition.
  • Adults with scala vestibuli insertion averaged 80.6% (2-syllable words) and 89.1% (words in phrases) recognition.
  • Pediatric patients showed varied results on the Geers and Moog scale; the massive ossification case had lower initial scores.

Conclusions:

  • Cochlear implants are feasible and effective in patients with cochlear ossification.
  • Specific surgical techniques can be tailored to the degree of ossification.
  • Positive hearing outcomes can be achieved, even in complex cases.