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. 2020 Nov 27;21:780. doi: 10.1186/s12891-020-03770-9

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© The Author(s) 2020

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/. 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 in a credit line to the data.

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Fig. 1 — a The right index finger of a 35-year-old man. The distal interphalangeal joint shows joint space narrowing in a simple radiograph, while T1 weighted image shows intramedullary marked low signal intensity, indicating osteomyelitis. b The right long finger of an 80-year-old woman. The proximal interphalangeal joint shows joint space narrowing and radial angulation deformity in a simple radiograph; however, a normal marrow signal is shown in the T1 weighted image. c The right long finger of a 58-year-old woman. The proximal interphalangeal joint shows definite osteolysis in a simple radiograph. The proximal phalanx reveals extensive intraosseous abscess in contrast-enhanced T1 weighted image