足関節固定術後の足部関節固定術における術前ステロイド注射のタイミングと再手術リスク
Vidushan Nadarajah1, Jibraun Emerson1, Kate Panzer1
1Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA, USA.
Foot & ankle international
|January 27, 2026
まとめ
足部関節固定術前のステロイド注射のタイミングは予後に影響します。術後3ヶ月以内の注射は1年後の再手術リスクを高めますが、90日以内の合併症は同様です。慎重な計画が推奨されます。
科学分野:
- 整形外科
- 薬理学
- 生物統計学
背景:
- 足部変形性関節症(OA)は、しばしば外科的固定術に先行します。
- 関節内ステロイド注射は、足部関節固定術前に一般的です。
- これらの注射の最適なタイミングはよく定義されていません。
研究 の 目的:
- ステロイド注射のタイミングと術後転帰との関連を評価すること。
- 注射のタイミングに基づいて、足部関節固定術後の90日合併症および1年後の再手術率を評価すること。
主な方法:
- 足部関節固定術を受けた82,144人の患者を対象とした後ろ向きコホート研究(2015-2024年)。
- 患者を術前ステロイド注射のタイミング別に分類しました:1ヶ月以内、1〜2ヶ月超、2〜3ヶ月超、3ヶ月以上(基準)、および注射なし。
- 多変量ロジスティック回帰およびCox比例ハザードモデルを使用して転帰を分析しました。
主要な成果:
- 調整後の90日合併症オッズは、3ヶ月以上群を基準とした場合、すべての注射タイミング群で同様でした。
- 術後3ヶ月以内の注射は、3ヶ月以上群と比較して、1年後の再手術のハザードが有意に高いことと関連していました(HRは約1.25〜1.49)。
- 高齢、男性、併存疾患の負担が大きいことも再手術リスクを高めました。
結論:
- 足部関節固定術の3ヶ月以内の術前ステロイド注射は、1年後の再手術率の上昇と相関しています。
- 注射のタイミングに基づく90日合併症に有意な差は観察されませんでした。
- 結果は、タイミングに関連するリスクが足部関節固定術の術前計画に影響を与える可能性を示唆していますが、データの限界により慎重な解釈が必要です。
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