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Insights into Imaging
Fig. 32 | Insights into Imaging

Fig. 32

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. 32

MRI pattern of osteonecrosis of systemic origin. a, b T1-weighted (a) and fatsuppressed T2-weighted MR images (b) show disseminated areas of osteonecrosis surrounded by linear rims appearing in low or high signal intensity on T1- or T2-weighted images, respectively (arrowheads). A necrotic collapsed area is shown, with fracture in the corresponding intraosseous lesion (arrows)

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