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. 2020 Jun 19;49(11):1709–1718. doi: 10.1007/s00256-020-03515-8

Fig. 5.

Fig. 5

OO mimicker of stress fracture on MRI. Coronal fat-saturated T2-weighted image (a) shows a semicircular medullary edema-like pattern (arrows) adjacent to the medial cortex of the femoral neck, a frequent location for stress injuries. But a coronal CT image (b) reveals a typical OO nidus (arrow). Note important hyperostosis (arrowheads) below the OO but not on the femoral neck