Ossicular reconstruction with hydroxyapatite.

概要

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Ossicular chain reconstruction with hydroxyapatite was performed in 37 patients. Extrusion of hydroxyapatite occurred in six patients (16.2%). Postoperative hearing results were assessed by the following criteria; 1) air conduction hearing level within 40dB, 2) air conduction hearing gain more than 15dB, 3) air-bone gap within 20dB. The first criterion was achieved in 58.3% in type III-modified tympanoplasty (III-C), 42.9% in type IV-modified tympanoplasty (N-C), and 54.8% total. The second criterion was achieved in 45.8% in III-C, 28.6% in IV-C, and 41.9% total. The last criterion was achieved in 83.3% in III-C, 42.9% in IV-C, and 74.2% total. One or more of the three criteria was achieved in 83.3% in III-C, 57.1% in IV-C, and 77.4% total. In some cases without extrusion, postoperative hearing results were not stable.
耳鼻咽喉科臨床学会の論文