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Related Experiment Video

Updated: May 8, 2026

Techniques of Endoscopic Ossiculoplasty
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Techniques of Endoscopic Ossiculoplasty

Published on: January 26, 2024

Hearing outcomes in functional surgery for middle ear malformations.

Daniel Philippon1, Nathalie Laflamme, Nicolas Leboulanger

  • 1*Service d'ORL et de chirurgie Cervicofaciale, CHU de Québec, Université Laval, Québec, Canada; and †Plateforme de recherche clinique, Centre de recherche du CHU de Québec et Faculté de médecine, Université Laval, Québec, Canada.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|September 13, 2013
PubMed
Summary

Related Concept Videos

The Auditory Ossicles01:11

The Auditory Ossicles

The auditory ossicles of the middle ear transmit sounds from the air as vibrations to the fluid-filled cochlea. The auditory ossicles consist of two malleus (hammer) bones, two incus (anvil) bones, and two stapes (stirrups), one on each side. These bones develop during the fetal stage and are the ones to ossify first. They are fully mature at birth and do not grow afterward.
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...

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Functional surgery for congenital middle ear malformations can improve hearing. In patients with favorable anatomy, 67% achieved significant air conduction improvement, demonstrating positive outcomes for hearing restoration.

Area of Science:

  • Otolaryngology
  • Pediatric Surgery
  • Audiology

Background:

  • Congenital middle ear malformations present challenges in hearing restoration.
  • Functional surgery aims to improve hearing by addressing malformations.
  • Standardizing information for families requires understanding outcomes in specific patient subgroups.

Purpose of the Study:

  • To report audiometric outcomes of functional surgery for congenital middle ear malformations.
  • To focus on a subgroup with the most favorable pre-operative anatomic conditions (Jahrsdoerfer score ≥ 8).
  • To provide standardized information for families regarding surgical hearing improvement.

Main Methods:

  • Retrospective case series at a tertiary referral center.
  • Review of patient charts for demographic data, pre-operative scores, ossicular chain status, ossiculoplasty type, and audiometric data.

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  • Audiometric evaluation performed pre-operatively and 6 months post-surgery.

    • Main Results:

    • Eighteen surgeries were performed on 13 pediatric patients (average age 9 years).
    • Mean air-bone gap (ABG) improved from 40.8 dB to 20.9 dB (p < 0.0001).
    • Mean air conduction PTA thresholds improved from 49.9 dB to 30.0 dB (p < 0.0001), with 17 of 18 ears showing improvement.

    Conclusions:

    • Functional surgery for congenital middle ear malformations yields variable hearing results.
    • In patients with optimal pre-operative anatomy, 67% (12/18 ears) achieved post-operative air conduction below 30 dB.
    • The study highlights positive hearing outcomes in a selected subgroup, aiding family counseling.