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. 2020 Nov 19;22:606–611. doi: 10.1016/j.jor.2020.11.014

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© 2020 Professor P K Surendran Memorial Education Foundation. Published by Elsevier B.V. All rights reserved.

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Fig. 5 — Examples of radiological progression of the disease. Theme 1: A new episode of SONK. Coronal STIR images showing: (A) Left knee medial femoral condyle subchondral fracture on 9/20/2013. (B) Right knee medial femoral condyle subchondral fracture on 5/21/2015. Theme 2: Worsening symptoms. Coronal STIR images showing: (A) Left knee medial femoral condyle subchondral fracture on November 7, 2011. (B) Left knee medial femoral condyle decreasing edema but worsening subchondral collapse and worsening osteoarthritis on September 3, 2012.