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. 2013 Sep 5;4(5):581–593. doi: 10.1007/s13244-013-0277-1

Fig. 18.

Fig. 18

Painful os peroneum syndrome. a Lateral radiograph of the ankle demonstrates the presence of an os peroneum (white arrow). Axial proton density-weighted (b) and T2-weighted fat-saturated (c) MRIs of the ankle show focal tendinosis at the peroneus longus tendon (white arrows) just distal to the os peroneum (black arrow) and surrounding soft tissue oedema (arrowheads). These findings corroborate a painful os peroneum syndrome