Relationship of T2 Value of High-signal Line on MRI to the Fragment in Osteochondral Lesion of the Talus
Foot and Ankle International 41 巻 6 号
698-704 頁
2020-06-01 発行
アクセス数 : 303 件
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今月のアクセス数 : 6 件
今月のダウンロード数 : 3 件
この文献の参照には次のURLをご利用ください : https://ir.lib.hiroshima-u.ac.jp/00051081
| ファイル情報(添付) | |
| タイトル ( eng ) |
Relationship of T2 Value of High-signal Line on MRI to the Fragment in Osteochondral Lesion of the Talus
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| 作成者 |
Ota Yuki
Kanemitsu Munekazu
Sumii Junichi
Nekomoto Akinori
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| 収録物名 |
Foot and Ankle International
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| 巻 | 41 |
| 号 | 6 |
| 開始ページ | 698 |
| 終了ページ | 704 |
| 抄録 |
Background:
Magnetic resonance imaging (MRI) is useful for evaluating the stability of an osteochondral lesion of the talus (OLT). A T2 high-signal line between the fragment and its bed on MRI is known as a reliable indicator of an unstable lesion. However, the lesion exhibits various conditions even if a T2 high-signal line is observed. The purpose of this study was to evaluate the relationship between the T2 value of a high-signal line and the condition of the area between the fragment and its bed in OLT. Methods: T2 values of the T2 high-signal line and those of joint fluid were measured from preoperative MRI images in 46 ankles with OLT and the T2 ratio (high-signal line / joint fluid) was calculated. The relationship between the T2 ratio and CT, arthroscopic, and histologic findings was examined. Results: The mean T2 ratio was 0.48. T2 ratios of cystic lesions (0.62) or bone absorption (0.67) in the bed were significantly higher than those without a cyst (0.40) or no absorption (0.40). The T2 ratio of an unstable lesion (0.51) was significantly lower than that of a stable lesion (0.29). In histologic findings, there were 2 separate patterns: chondral and subchondral bone separations. The T2 ratio of the chondral separation (0.60) was significantly higher than that of bone separation (0.48). Conclusion: This study showed that the T2 ratio on a high-signal line was a predictor of stability, cyst, and bone absorption in OLT. Level of evidence: Level III, comparative series. |
| 著者キーワード |
MRI
T2 high-signal line
osteochondral lesion
talus
stability
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| 内容記述 |
アクセプト後にタイトル・アブストラクト等変更あり、著者最終稿は変更前のタイトル"T2 value of high signal line on MRI is related to the conditions around the fragment in osteochondral lesion of talus"
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
SAGE Publications
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| 発行日 | 2020-06-01 |
| 権利情報 |
Nakasa T, Ikuta Y, Ota Y, et al. Relationship of T2 Value of High-signal Line on MRI to the Fragment in Osteochondral Lesion of the Talus. Foot & Ankle International. 41(6), pp.698-704. Copyright © 2020 Authors. doi:10.1177/1071100720910381
This is not the published version. Please cite only the published version. この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
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| 出版タイプ | Author’s Original（十分な品質であるとして、著者から正式な査読に提出される版） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1071-1007
[ISSN] 1944-7876
[DOI] 10.1177/1071100720910381
[PMID] 32148074
[DOI] https://doi.org/10.1177/1071100720910381
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