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. 2016 Sep 12;12(5):453–460. doi: 10.1177/1558944716668831

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© The Author(s) 2016

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 page (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 4. — The 27G needle passed over the SPA.

Note. SPA = superficial palmar arterial arch; SC = subcutaneous fibroadipose tissue of the palm; SupPA = superficial palmar aponeurosis; DB = the duck’s beak; fd = fat pad; FDS = flexor digitorum superficialis tendons; FDP = flexor digitorum profundus tendons; MC = metacarpal bone.