Clinical and theoretical investigations of cartilage graft in type 1 tympanoplasty in children

DOI

Bibliographic Information

Other Title
  • 小児での鼓室形成術I型におけるcartilage graftと術後聴力

Search this article

Description

The use of cartilage in reconstruction of the tympanic membrane is a reliable technique, and is recommended for high risk failure cases, such as total perforations, revision cases, and tubal dysfunction. Morphological and audiological results of 19 patients younger than 15 years of age who underwent type I cartilage tympanoplasty to repair a tympanic membrane perforation were retrospectively evaluated. The surgical success rate, defined as long-term closure of the tympanic membrane, was 95%. The average postoperative pure-tone average (PTA) was 18.9 dB. All 19 patients had successful hearing results (with a PTA within 30 dB) according to the evaluation standard for tympanoplasty of the Japan Otological Society. However, cartilage grafts results in increased acoustic impedance of the tympanic membrane, and these may affect adversely acoustic transfer and hearing. However, hearing outcomes between cartilage myringoplasty and fascia myringoplasty were considered to be no different. A middle ear model which included acoustic coupling (the response to the cochlea to the pressure difference between the oval and round windows) might explain the reason of no significant losses in middle ear transmission for the cartilage grafts.

Journal

  • Otology Japan

    Otology Japan 24 (5), 742-747, 2014

    Japan Otological Society

Keywords

Details 詳細情報について

Report a problem

Back to top