Ortho Dx: A man with years of ankle pain

A 42-year-old man presents with a 6-week history of severe right ankle pain. He has had intermittent pain in the ankle for 3 to 4 years, but it has never been this severe. He is now having trouble standing and stocking shelves at work. Anteroposterior, mortise, and lateral view radiographs are taken.

This case has been brought ...