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. 2017 Mar 16;12:10. doi: 10.1186/s13013-017-0114-2

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© The Author(s). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 24 — The second 3C compatible curve pattern is the classical “single main thoracic curve” with no lumbar or just a mild totally functional lumbar curve. This is called A2 type. Second criterion for diagnose is the TP offset to the convex thoracic side. It can be combined with a structural proximal thoracic curve (D modifier)