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The ossicle-cup prosthesis: five years later.

A G Schuring, W H Lippy

    Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
    |September 1, 1986
    PubMed
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    The ossicle-cup prosthesis, a semibiologic implant, offers stable, long-lasting hearing restoration. Successful cases maintain hearing improvements for over five years, demonstrating its efficacy in tympanoossiculoplasty.

    Area of Science:

    • Otolaryngology
    • Biomaterials Science
    • Surgical Innovation

    Background:

    • The ossicle-cup prosthesis is a semibiologic implant designed for middle ear reconstruction.
    • It integrates a synthetic component with the native or transplanted ossicle, creating a dynamic joint on the stapes capitulum.

    Purpose of the Study:

    • To evaluate the long-term efficacy and stability of the ossicle-cup prosthesis in hearing restoration surgeries.
    • To identify factors influencing surgical outcomes and causes of failure.

    Main Methods:

    • A retrospective analysis of 114 patients who received an ossicle-cup prosthesis in 1978.
    • Assessment of hearing levels (within 20 dB of preoperative bone conduction) at 1 and 5 years post-surgery.
    • Analysis of revision surgeries and causes of prosthesis failure.

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    Main Results:

    • 84% of patients achieved hearing within 20 dB of baseline after 1 year.
    • 74% of successful cases maintained hearing improvements at 5 years.
    • Revision surgery success rate was 50% at 1 year; common failures included ossicle necrosis, tympanic membrane issues, and prosthesis fixation.

    Conclusions:

    • The ossicle-cup prosthesis demonstrates stability, ease of revision, and longevity.
    • It is a reliable option for hearing restoration, with a high probability of sustained success.
    • Concurrent mastoidectomy may negatively impact outcomes compared to isolated tympanoossiculoplasty.