Fig. 5
From: CT arthrography for demonstration of various articular injuries in post-sprained ankle pain
Acute lateral right ankle pain. He has a history of multiple episodes of lateral ankle sprains; the current episode was lateral sprain. Axial CTA images (a, b) show complete tear of the superior band of ATFL (notched arrow) and intact inferior band (arrow). Sagittal CTA (c) demonstrates wide loss of hyaline cartilage and subjacent bone plate through the posterior talar dome (black arrow) representing type IV OCL, and the subchondral bone appears flattened, note posterior tibial plafond cartilage defect (white arrow). Coronal CTA (d) shows type IIA OCL at the medal talar corner (black arrow)