書誌事項
- タイトル別名
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- Congenital Anomaly of the Ossicles without Malformation of the External Auditory Canal.
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We reported 9 cases of patients with congenital anomaly of the ossicles without malformation of the external auditory canal. Disconnection of the incudostapedial joint was found in 4 cases, malleus fixation in 2 cases, stapes fixation in one case. Bony closure of the round window in two cases with and without disconnection of incudostapedial joint was recognized. Audiograms showed conductive hearing impairment in 8 cases and mixed hearing impairment in one case. Air-bone gaps ranged from 27 to 66 dB in those cases. On X-ray films, ossicular anomalies were not detectable in all cases. Tympanogram showed Ad type in 2 cases, As type in 3 cases, and A type in 4 cases. Sclerotic type of the ossicular chain was found in 4 cases, and in 3 of these 4 cases, their tympanograms were As type. Five cases revealed disconnection type of the ossicular chain, and 2 of 5 cases showed Ad type. The tympanic cavity was exposed and examined without ossicular chain reconstruction in 2 of 9 cases, because of bony closure of the round window with abnormal location of the facial nerve. The ossicular chain was reconstructed in 7 cases. Autografts of a bone tip was used in 1 case, and the malleus was in 2 cases. Hydroxyapatite ceramic ossicular replacement prosthesis (CORP) was used in 3 cases. Bony fusion of the malleus with the tympanic anulus was drilled down in one case. After surgery, postoperative hearing improvement was achieved in 6 (67%) of 9 cases. These findings suggest that surgical reconstruction of the ossicular chain should be considered in the congenital anomaly with air-bone gap.
収録刊行物
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- Otology Japan
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Otology Japan 5 (3), 205-208, 1995
一般社団法人 日本耳科学会
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詳細情報 詳細情報について
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- CRID
- 1390282679746156800
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- NII論文ID
- 10009317610
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- NII書誌ID
- AN10358085
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- ISSN
- 18841457
- 09172025
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可