A 38-year-old man rolled his ankle during a football match and turned up at hospital with the standard picture: swelling and tenderness over the outer ligaments and the top of the foot, painful restriction of ankle movement, and a limp.
The first two X-ray views showed nothing. It was the oblique view that produced a small, sharply outlined piece of bone sitting next to the front of his heel bone, in exactly the spot where a chunk gets torn off in a certain kind of ankle injury.
