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Failures with Plasti-Pore ossicular replacement prostheses.

M Sanna, R Gamoletti, M Magnani

    Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
    |June 1, 1984
    PubMed
    Summary
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    Plasti-Pore ossicular prostheses had a 9.3% failure rate. Prostheses without cartilage showed higher extrusion rates (18.4%) than those with cartilage (4.4%), indicating cartilage improves prosthesis stability.

    Area of Science:

    • Otolaryngology
    • Biomaterials Science
    • Surgical Outcomes Research

    Background:

    • Ossicular reconstruction is crucial for hearing restoration in middle ear pathologies.
    • Plasti-Pore prostheses are commonly used, but their long-term efficacy and failure modes require analysis.

    Purpose of the Study:

    • To analyze the failure rates and causes of Plasti-Pore ossicular prostheses in a large patient cohort.
    • To compare the extrusion and functional outcomes of Plasti-Pore prostheses with and without cartilage interposition.

    Main Methods:

    • Retrospective analysis of 246 patients who received Plasti-Pore ossicular prostheses.
    • Evaluation of prosthesis extrusion and functional results (air-bone gap > 25 dB) during regular follow-up.
    • Review of revision surgeries for poor hearing outcomes to identify specific failure causes.

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    Main Results:

    • Overall Plasti-Pore prosthesis extrusion rate was 9.3%.
    • Prostheses without cartilage had a significantly higher extrusion rate (18.4%) compared to those with cartilage (4.4%).
    • Common causes for poor functional results included short prosthesis length, stapes fixation, adhesions, and prosthesis displacement.

    Conclusions:

    • Cartilage interposition significantly reduces the extrusion rate of Plasti-Pore ossicular prostheses.
    • Careful surgical technique and patient selection are essential to mitigate risks of prosthesis failure and displacement.
    • Addressing factors like prosthesis length and stapes mobility is critical during revision surgeries for hearing improvement.