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Insights into Imaging
Fig. 23 | Insights into Imaging

Fig. 23

From: Subchondral insufficiency fractures, subchondral insufficiency fractures with osteonecrosis, and other apparently spontaneous subchondral bone lesions of the knee—pathogenesis and diagnosis at imaging

Fig. 23

Evolution of subchondral osteonecrosis related to insufficiency fracture (SIF-ON) according to the size of the necrosis. a, b Fat-suppressed T2-weighted MR coronal images (a) and T2-weighted sagittal image (b) show a very small heterogeneous signal intensity area (arrow). c, d Ten months later, CT arthrography images show very limited collapse (arrows)

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