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What is the most important finding here?
Osteochondral fragment at the superomedial talar dome.
What stage injury is this?
Stage 3 - high signal around osteochondral fracture (rim sign) but not displaced.
An osteochondral bone fragment is seen at the superomedial aspect of the talar dome. It shows diffuse sclerosis and is surrounded by a sclerotic line of its cavity. A linear high T2 and STIR signal (rim sign) is surrounding the osteochondral fragment suggesting fragment separation. No detachment is seen.