後方根部修復術対二重トンネル中心化術:後内側半月板損傷に対する比較
Yaşar Samet Gökçeoğlu1, Muhammed Furkan Darılmaz2
1Department of Orthopedics, Sanliurfa Mehmet Akif Inan Training and Research Hospital, Sanliurfa, Turkey.
Journal of orthopaedic surgery (Hong Kong)
|February 28, 2026
まとめ
後内側半月板後方根部損傷に対する二重トンネル中心化術は、患者の機能と生活の質を著しく改善する。この手技は、静的なMRIでの断片化増大を悪化させることなく、特に内反アライメントの患者に利点を提供する。
科学分野:
- 整形外科学
- スポーツ医学
- 生体力学工学
背景:
- 後内側半月板後方根部損傷は、修復後も持続的な断片化と関節力学の変化を頻繁に引き起こす。
- 標準的な修復技術では、正常な膝機能と関節力学を完全に回復できない場合がある。
研究 の 目的:
- 標準的な経脛骨プルアウト修復術と、修復術および第二トンネル中心化術の併用アプローチを比較すること。
- 中心化トンネルの追加が患者報告アウトカムおよび膝の構造的パラメータを改善するかどうかを評価すること。
主な方法:
- MRIで確認された根部損傷を有する成人を対象とした、2施設共同の後向きコホート研究(2019-2024年)が含まれた。
- 傾向スコアマッチングにより、修復単独群対中心化併用修復群の比較可能な群(n=96)が作成された。
- アウトカムには、IKDC、KOOS、Lysholm、VAS疼痛、Tegner活動度、および24ヶ月時点でのMRI評価による内側半月板断片化が含まれた。
主要な成果:
- 中心化群は、国際膝関節機能評価(IKDC)スコアで有意に大きな改善を示した(+5.7ポイント、p=0.008)。
- 膝変形性関節症アウトカムスコア(KOOS)の生活の質サブスケールでも、中心化群でより高いスコアが観察された。
- 内側半月板断片化の変化はわずかで、両群間で同等であった。残存断片化率は同様であった(65%対62%)。
結論:
- 第二トンネル中心化術は、後内側半月板後方根部損傷患者における臨床的に意味のある機能的改善を達成する可能性を有意に高める。
- この利点は、静的なMRI測定による断片化に有意な変化がないにもかかわらず観察され、動的な荷重共有の改善を示唆している。
- 中心化は、ルーチン的な必要性というよりは、特に内反アライメントを有する患者にとって推奨される補助療法である。
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