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. 2022 Sep 23;53(3):426–437. doi: 10.1007/s00247-022-05502-8

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© The Author(s) 2022

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Fig. 4 — Erosions demonstrated on MRI at the left acetabulum as shown on coronal three-dimensional (3-D) T1-weighted turbo spin-echo sequences in patients with juvenile idiopathic arthritis (JIA). a No visible acetabular erosions (score 0) in a 20-year-old woman. b Some erosions on the superior aspect of the acetabulum (< 33% of the surface, arrows) (score 1) in a 18-year-old man. c Multiple acetabular erosions (between 34% and 66% of the surface, arrows) (score 2) in a 13-year-old boy. d Erosive changes of the whole acetabular surface (arrows) (score 3) in a 19-year-old woman with complete destruction of the femoral head (arrows)