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학습 자료 둘러보기 →Osteoarthritis pain is mechanical: it worsens with activity and improves with rest. This is due to friction on exposed subchondral bone as cartilage degenerates.
Morning stiffness in OA is brief, typically <30 minutes, described as gelling. In contrast, rheumatoid arthritis stiffness lasts >1 hour.
Do not rely on pain pattern alone. OA is asymmetrical and lacks systemic symptoms. Symmetrical, small-joint involvement with subcutaneous nodules or elevated ESR strongly suggests RA.
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