膝関節炎の臨床試験の適格性のスクリーニングツールとしてのMRIとX線写真:関節炎イニシアチブのデータ
Ali Guermazi1, Frank W Roemer2, Erin L Ashbeck3
1Department of Radiology, Boston University School of Medicine, Boston, MA, United States.
Seminars in arthritis and rheumatism
|September 6, 2025
まとめ
MRIスクリーニングでは,DMOAD試験の対象となる膝関節炎患者の約10%が,標準的なX線写真では見逃された排除性病理,主に半月膜の根裂を患っていることが明らかになった.
科学分野:
- 整形外科
- 放射線科
- 臨床試験
背景:
- 骨関節炎 (OA) の臨床試験では,正確な患者の選択が必要です.
- 病変性関節炎薬 (DMOAD) 試験では,適格性を決定する放射線学的基準がしばしば用いられます.
- DMOAD試験への参加は,特定の構造的病変によって妨げられます.
研究 の 目的:
- DMOAD試験から参加者を除外する膝の構造病変の流行を決定する.
- MRIとX線画像を比較して,これらの排除された発見を特定します.
- DMOAD試験の共通の放射線検査基準に基づいて適格性を評価する.
主な方法:
- 骨格関節炎イニシアチブからのデータを使用しました.
- ケルグレン・ローレンス2〜3級OAと特定の共同スペースの幅の基準を満たした参加者を含む.
- 3T MRI プロトコルとX線写真を用いて,急性関節炎MRI適格性スコア (ROAMES) を用いて除外病理を評価した.
主要な成果:
- 10% (38/380) の適格な被験者はMRIで除外病理を示し,X線写真では0. 8% (3/380) であった.
- 完全な後部半月板の根の破裂は,最も一般的な排除発見 (8. 2%) でした.
- MRIは,KL2の6%とKL3の16%で排除の発見を明らかにした.
結論:
- MRIスクリーニングは,DMOAD試験から除外する重要な膝の構造病変 (∼10%) を特定します.
- これらの排除的な発見は,主に半月板の根裂けは,しばしばX線写真で検出されません.
- 現在の放射線検査の適格性基準には,未解決の構造上の問題により,DMOAD試験に適さない患者が含まれる可能性があります.
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