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. 2021 Feb 12;12:16. doi: 10.1186/s13244-020-00958-4

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© The Author(s) 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 10 — HHS in a 55-year-old manual worker exposed to different causative factors, including vibrating tools. a, b Axial and coronal T2-weighted MR images showing an occluded aneurysm (arrow) of the distal portion of the distal UA and severe osteoarthritis affecting the trapeziometacarpal joint. c, d Axial image and GI with dynamic CTA showing the distal occlusion of the UA, the patency of the SPA fed by the FPMA, a corkscrew deformity of common digital arteries, and the UA at the level of the ulnar head (curved arrow). Note the close relationship between the aneurysm and the superficial branch of the ulnar nerve (arrowhead)