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Long-term observations on ceramic ossicular replacement prosthesis (CORP).

E Yamamoto1

  • 1Department of Otolaryngology, Kobe City General Hospital, Japan.

The Laryngoscope
|April 1, 1988
PubMed
Summary
This summary is machine-generated.

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Long-term ceramic ossicular replacement prosthesis (CORP) studies show satisfactory hearing results. Most extrusions occurred within 2 years, but fixation techniques can prevent complications and maintain hearing outcomes.

Area of Science:

  • Otolaryngology
  • Biomaterials Science
  • Surgical Innovation

Background:

  • Ceramic ossicular replacement prostheses (CORP) are used in middle ear reconstructive surgery.
  • Long-term data on the performance and extrusion rates of different CORP types are crucial for surgical decision-making.

Purpose of the Study:

  • To evaluate the long-term efficacy and safety of ceramic ossicular replacement prostheses (CORP).
  • To analyze extrusion rates and hearing outcomes associated with CORP implantation over extended periods.
  • To identify factors influencing unsatisfactory hearing gains and propose preventative strategies.

Main Methods:

  • Long-term observational study of patients implanted with ceramic ossicular replacement prostheses (CORP-P and CORP-T).
  • Monitoring of extrusion rates and audiological results, including air-bone gaps at 1 year and 3-5 years post-implantation.

Related Experiment Videos

  • Analysis of complications and correlation with surgical techniques.

    • Main Results:

    • Overall extrusion rates were 8.3% for CORP-P and 5.2% for CORP-T, predominantly within the first two years.
    • Satisfactory hearing results were maintained long-term, with air-bone gaps within 10 dB observed in 44.8% (CORP-P) and 31.2% (CORP-T) at 1 year, and similar rates at 3-5 years.
    • Unsatisfactory hearing outcomes were primarily linked to prosthesis displacement or extrusion.

    Conclusions:

    • Ceramic ossicular replacement prostheses (CORP) demonstrate sustained hearing results over the long term.
    • Prosthesis extrusion is a significant complication, necessitating preventative measures.
    • Surgical fixation techniques, such as using cartilage plates, fascia, or malleus fixation, can mitigate extrusion and improve hearing outcomes.