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Updated: Feb 26, 2026

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Reverse Total Shoulder Arthroplasty
Published on: July 5, 2011
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骨性関節窩は上向きに傾斜しているが、関節窩表面はそうではない
Maximilian Modelhart1,2, Eva C Herbst1,3, Alexander M H Kunde4
1Department for Shoulder and Elbow Surgery, Schulthess Clinic, Zurich, Switzerland.
JSES international
|February 25, 2026
まとめ
関節唇複合体は、関節窩の傾斜を著しく減らし、関節の凹度を増加させ、肩の安定性を高める。これらの効果は、骨の傾斜と半径が大きいほど顕著になり、代償的な役割を示唆している。
科学分野:
- 整形外科学
- 生体力学
- 放射線学
背景:
- 関節窩関節唇は肩関節の安定性と関節窩形態にとって不可欠である。
- 関節窩の傾斜は肩関節内の荷重分布に影響を与える。
- 関節窩の幾何学的形状に対する関節唇の影響を理解することは、肩の病状の診断にとって重要である。
研究 の 目的:
- 関節唇が関節窩の傾斜、凹度、曲率半径に及ぼす影響を調査すること。
- 関節唇が上下方向の関節窩形態にどのように影響するかを評価すること。
- 肩関節の適合性における関節唇の役割を評価すること。
主な方法:
- AC関節脱臼患者43例のMRI/MRAを用いた後ろ向き解析。
- 関節窩表面および骨性関節窩の傾斜、凹度、曲率半径の測定。
- 骨および関節窩表面の測定値の統計的比較および相関分析。
主要な成果:
- 関節唇は関節窩の傾斜を5.5°、半径を8.4 mm有意に減少させた。
- 関節唇は関節窩の凹度を3.2 mm有意に増加させた。
- 骨および関節窩表面の測定値の間には正の相関が見られ、関節唇の代償的な役割を示唆している。
結論:
- 関節唇複合体は関節窩形態の形成において重要な役割を果たし、傾斜を減らし凹度を増加させる。
- 関節唇は肩関節の適合性と安定性を高める。
- 関節窩の幾何学的形状に対する関節唇の効果は、潜在的な骨形態に対する代償的であるように思われる。
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