Fig. 4
From: CT arthrography for demonstration of various articular injuries in post-sprained ankle pain
Chronic diffuse ankle pain after four episodes of ankle sprains, the current episode was lateral sprain. Axial CTA through the talar dome (a) demonstrates large medial OCL with cystic changes (type IIA). Axial CTA through the talar neck (b) demonstrates bowed ATFL (black arrows) with thin fibers at the lateral malleolar attachment. The deep deltoid ligament shows contrast medium within its posterior band (white arrow) indicating its injury. Axial CTA (c) through the calcaneus show contrast within the peroneal tendon sheath indicating CFL tear. Coronal CTA (d) shows uneven joint space that appears widened laterally (dashed arrow), note the cartilage loss overlying type IIA OCL at medial talar corner (notched arrow)