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. 2014 Aug 12;2(8):2325967114545298. doi: 10.1177/2325967114545298

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© The Author(s) 2014

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License (http://www.creativecommons.org/licenses/by-nc-nd/3.0/) which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access page (http://www.uk.sagepub.com/aboutus/openaccess.htm).

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Figure 1. — Sonographic classification of osteochondritis dissecans of the capitellum. (A) Grade 0 is normal, (B) grade 1a shows an irregular surface on the subchondral bone, (C) grade 1b shows a cystic lesion on the subchondral bone surface, (D) grade 2 shows irregularity of the subchondral bone, and (E) grade 3 shows discontinuity of the subchondral bone.