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Insights into Imaging
Fig. 19 | Insights into Imaging

Fig. 19

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. 19

Borderline thickness of bone marrow low signal on T2-weighted image. a, b MRI shows low signal intensity on T1-weighted (a) and high signal intensity on fat-suppressed T2-weighted images in the medial femoral condyle (b) (asterisks). Immediately near the subchondral surface, fat-suppressed T2-weighted image shows a very thin layer of tissue of borderline thickness with low signal intensity (arrow in b). c, d In the present case, the follow-up at 3 months showed healing, with normalization of the signal in the inferior pole of the condyle

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