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. 2014 Feb 24;66(3):432–439. doi: 10.1002/acr.22158

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© 2014 The Authors. Arthritis Care & Research is published by Wiley Periodicals, Inc. on behalf of the American College of Rheumatology.

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Graphical summary (homunculus) of A, subclinical synovitis (shown in red), graded according to the proportion of joints in which ultrasound (US) was positive (gray-scale [GS] score ≥2 or power Doppler [PD] score ≥1 present) and clinical examination (CE) was negative (no tenderness or swelling) and B, apparent clinical overestimation of synovitis (shown in red), graded according to the proportion of joints in which US was negative (GS score ≥2 or PD score ≥1 absent) and CE was positive (tenderness and/or swelling present). White = 0% of joints; red = 50% of joints.