Marked high STIR signals involving the sinus tarsi – suggestive of Sinus tarsi syndrome

Marked focal subchondral bone marrow edema at medial aspect of talocalcaneal joint with overlying cartilage loss and small erosions of the articular margins – suggestive of talo calcaneal arthrosis , likely related to fibrous talo calcaneal coalition

Mild joint effusion.

Recommend clinical correlation.