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Missing stapes and stapes-replacing prosthesis.

J Sadé, E Yaniv, S Avraham

    The American Journal of Otology
    |May 1, 1985
    PubMed
    Summary
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    Only 40% of chronic ear disease cases with a missing stapes are suitable for ossiculoplasty. A new stapes replacement prosthesis (SRP) called Tabor shows promise for suitable candidates, improving hearing outcomes.

    Area of Science:

    • Otolaryngology
    • Biomaterials Science
    • Surgical Innovation

    Background:

    • Chronic ear disease frequently results in stapes (ossicle) absence.
    • Ossiculoplasty is a surgical option for hearing restoration, but suitability varies.
    • A significant portion of patients with missing stapes are not candidates for traditional ossiculoplasty.

    Purpose of the Study:

    • To evaluate the suitability of ears with missing stapes for ossiculoplasty.
    • To introduce and assess a novel stapes replacement prosthesis (SRP) for specific cases.
    • To report the surgical outcomes of the new SRP in patients with chronic ear disease.

    Main Methods:

    • Retrospective analysis of 205 ears with missing stapes due to chronic ear disease.
    • Development and description of a two-part stapes replacement prosthesis (Tabor SRP) using Teflon and autograft/homograft bone.

    Related Experiment Videos

  • Surgical implantation of the Tabor SRP in fourteen selected ears.

    • Main Results:

    • Only 40% of the studied ears were deemed suitable for ossiculoplasty.
    • Reasons for unsuitability included fixed footplate, severe atelectasis, hearing above 25 dB, or poor discrimination.
    • Successful implantation of the Tabor SRP in 12 out of 14 ears.
    • Average air conduction improved from 56 dB to 29 dB post-surgery.
    • Average air-bone gap reduced to 16 dB.
    • Bone conduction improved from an average of 20 dB to 13 dB.

    Conclusions:

    • A substantial percentage of ears with missing stapes are unsuitable for conventional ossiculoplasty.
    • The novel Tabor stapes replacement prosthesis (SRP) offers a viable surgical solution for selected patients.
    • The Tabor SRP demonstrated significant improvements in air conduction, air-bone gap, and bone conduction, indicating successful hearing restoration.