Cartilage Connecting Ossicular Chain Prosthesis

Shugo Shiraishi; Yasuo Hosoda; Toyohiko Minami; Kouichi Tomoda; Toshio Yamashita

doi:10.5106/jjshns.6.209

Shugo Shiraishi, Yasuo Hosoda, Toyohiko Minami, Kouichi Tomoda, Toshio Yamashita

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Keywords: Ossicular chain prosthesis, Cartilage connecting

JOURNAL FREE ACCESS

1996 Volume 6 Issue 3 Pages 209-214

DOI https://doi.org/10.5106/jjshns.6.209

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Published: December 30, 1996 Received: - Available on J-STAGE: July 27, 2010 Accepted: - Advance online publication: - Revised: -
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Date of correction: July 27, 2010 Reason for correction: - Correction: ABSTRACT Details: Wrong : There are two main problems for artificial ossicular chain prosthesis ; extrusion and postoperative slippage of prosthesis. We manufactured a new hydroxylapatite prosthesis "carti-lage connecting ossicular chain prosthesis" with a planar-like head portion to contact with a piece of cartilage. As a result, postoperative extrusion rate was 4/124 (3.2 %) which seemed lower than the conventional type, and hearing success rates were 78.8 % in modified type III tympanoplasty, 80.0 % in modified type IV tympanoplasty. Average improvement on air conduction were 13.5 dB in modified type III tympanoplasty, 17.5 dB in modified type IV tympanoplasty. Those good results were explained by that the "Cartilage connecting ossicular chain prosthesis" Was tightly attached with a reconstructed tympanic membrane and ossicular chain prosthesis might be stable in tympanic cavity.
Right : There are two main problems for artificial ossicular chain prosthesis ; extrusion and postoperative slippage of prosthesis. We manufactured a new hydroxylapatite prosthesis “carti-lage connecting ossicular chain prosthesis” with a planar-like head portion to contact with a piece of cartilage. As a result, postoperative extrusion rate was 4/124 (3.2 %) which seemed lower than the conventional type, and hearing success rates were 78.8 % in modified type III tympanoplasty, 80.0 % in modified type IV tympanoplasty. Average improvement on air conduction were 13.5 dB in modified type III tympanoplasty, 17.5 dB in modified type IV tympanoplasty. Those good results were explained by that the “Cartilage connecting ossicular chain prosthesis” Was tightly attached with a reconstructed tympanic membrane and ossicular chain prosthesis might be stable in tympanic cavity.

Abstract

There are two main problems for artificial ossicular chain prosthesis ; extrusion and postoperative slippage of prosthesis. We manufactured a new hydroxylapatite prosthesis “carti-lage connecting ossicular chain prosthesis” with a planar-like head portion to contact with a piece of cartilage. As a result, postoperative extrusion rate was 4/124 (3.2 %) which seemed lower than the conventional type, and hearing success rates were 78.8 % in modified type III tympanoplasty, 80.0 % in modified type IV tympanoplasty. Average improvement on air conduction were 13.5 dB in modified type III tympanoplasty, 17.5 dB in modified type IV tympanoplasty. Those good results were explained by that the “Cartilage connecting ossicular chain prosthesis” Was tightly attached with a reconstructed tympanic membrane and ossicular chain prosthesis might be stable in tympanic cavity.

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