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Related Experiment Videos

Malleus-stapes assembly: experience with two prostheses.

M Al-Qudah1, P J D Dawes

  • 1Department of ORL-HNS, Division of Medical and Surgical Sciences, University of Otago, Dunedin, New Zealand.

The Journal of Laryngology and Otology
|June 3, 2006
PubMed
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Incis ossiculoplasty using autografts or Wehrs prostheses offers stable middle-ear reconstruction. Both methods achieve comparable hearing improvements after tympanoplasty surgery.

Area of Science:

  • Otolaryngology
  • Surgical Innovation
  • Hearing Reconstruction

Background:

  • Tympanoplasty often requires ossicular chain reconstruction.
  • The incus is the preferred autograft for bridging the stapes and malleus.
  • Hydroxyapatite Wehrs incus prostheses serve as an alternative when autografts are unsuitable.

Purpose of the Study:

  • To compare the efficacy of incus autograft ossiculoplasty versus modified Wehrs incus prosthesis ossiculoplasty.
  • To evaluate hearing outcomes and long-term stability of these middle-ear reconstruction techniques.

Main Methods:

  • Retrospective analysis of 26 patients undergoing incus autograft ossiculoplasty.
  • Retrospective analysis of 20 patients undergoing modified Wehrs incus prosthesis ossiculoplasty.

Related Experiment Videos

  • Assessment of post-operative air-bone gaps (ABGs) and long-term stability over four years.

    • Main Results:

    • Average post-operative ABGs were 16.2 dBHL for autografts and 17.2 dBHL for prostheses.
    • Closure to within 15 dBHL was achieved in 48% of autografts and 57% of prostheses.
    • Closure to within 20 dBHL was achieved in 77% of autografts and 62% of prostheses.
    • Both methods demonstrated stable reconstruction over a four-year follow-up period.

    Conclusions:

    • Incus autograft and Wehrs prosthesis ossiculoplasty provide effective and stable solutions for middle-ear reconstruction.
    • The Wehrs prosthesis demonstrates comparable or slightly superior short-term hearing outcomes compared to incus autografts.
    • Both techniques are reliable options for improving hearing after tympanoplasty.