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. 2019 May 7;4(2):2473011419838500. doi: 10.1177/2473011419838500

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© The Author(s) 2019

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 4. — New anatomical-based hallux valgus classification. Type 1 depicted in panels A and B involves increased hallux valgus angle (HVA) and intermetatarsal angle (IMA), no metatarsal pronation, and no sesamoid subluxation. Type 2 involves the addition of metatarsal pronation either without sesamoid subluxation as in panels C and D or with sesamoid subluxation as in panels E and F. Type 3 incorporates metatarsus adductus > 20 degrees as in panels G and H. Type 4 incorporates degenerative changes at the first metatarsophalangeal (MTP) joint as in panels I and J.