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  • Title: A middle ear implant with a titanium canal wall prosthesis for a case of an open mastoid cavity.
    Author: Deveze A, Rameh C, Sanjuan M, Lavieille JP, Magnan J.
    Journal: Auris Nasus Larynx; 2010 Oct; 37(5):631-5. PubMed ID: 20167445.
    Abstract:
    OBJECTIVE: Open mastoid cavity rehabilitation should focus on both anatomical and functional aspects. We hereby report the technique and results of a combined strategy to reconstruct the external ear canal using a titanium wall implant and the middle ear using a fully implantable active middle ear device. METHODS: A fully implantable active middle ear implant was used to rehabilitate the mixed hearing loss of a 63-year-old woman, and a titanium posterior canal wall prosthesis was used to reconstruct the external ear canal during the same procedure. The middle ear implant was placed directly on the footplate. The auditory results were compared to the preoperative unaided thresholds and to the amplification of a conventional hearing aid. RESULTS: Following the procedure, there was an anatomically normal external ear canal with a healed tympanic membrane separating the external from the middle ear spaces. The postoperative auditory gains were on average 31.8 dB on pure-tone audiometry, and 20 dB on speech reception threshold. No complications occurred. CONCLUSION: The rehabilitation of the external ear canal in an open mastoid cavity allows for clinical follow-up of the patient, and the implantation of an active middle ear implant provides appropriate auditory gains both in pure tones and in speech reception thresholds.
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