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Insights into Imaging
Fig. 21 | Insights into Imaging

Fig. 21

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. 21

Diagram summarizing the prognostic value of typical subchondral signal intensity on T2-weighted sequences in SIF and SIF-ON. Note that in some cases, a very limited area with subchondral low T2 signal intensity is of doubtful prognosis and may progress either to healing or to SIF-ON. Without a particular event (meniscectomy or rapid cartilage degeneration for example), the evolution of a typical SIF towards a SIF-ON is very rare

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