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. 2021 May 22;23:146. doi: 10.1186/s13075-021-02524-9

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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/. 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. 2 — Severe progression of right knee degenerative changes over 4 years in an opioid user. Images were reviewed on picture archiving and communication system (PACS) workstations. Coronal views from intermediate-weighted sequences. a Baseline exam. Beginning extrusion and intra-substance lesion of the lateral meniscal body (arrowhead) and cartilage signal abnormality at the lateral tibial plateau (arrow). b Deterioration and progressive extrusion of the lateral meniscal body. Full-thickness cartilage loss at the medial femoral condyle (> 1 cm) and medial tibial plateau (> 1 cm) (arrow). Of note, new partial thickness cartilage loss at the medial femoral condyle and new, large subchondral cyst at the medial tibial plateau (arrowhead)