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Insights into Imaging
Fig. 29 | Insights into Imaging

Fig. 29

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. 29

Pejorative evolution of SIF related to cartilage degradation. a, b Initial T1-weighted MR image shows a typical subchondral insufficiency fracture in the medial tibial plateau on T1-weighted image (arrow in a) with a BME-like high-signal intensity on fat-suppressed T2-weighted image (asterisk in b). c The lesion is associated with a radial tear of the posterior horn of the medial meniscus (arrow). d–f Six months later, T1-weighted (d) and fat-suppressed T2-weighted (e) images show various signal intensities in bone on both sides of a severe chondral loss (arrows in f). The initial examination already showed a clear thinning of the cartilage of the medial condyle (arrowhead in b), which could have indicated a pejorative evolution

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