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A and B, On T1-weighted (A) and STIR (B) coronal images of hips, signal changes (arrows) involving > 30% femoral epiphyseal articular surface bilaterally are seen.
C and D, T1-weighted (C) and STIR (D) images show articular collapse (arrows) of femoral heads bilaterally on follow-up MRI performed 2.5 years later.
