In this paper we report a case of osteochondral fracture of the latera
l tibial pilon. A young man fell while he was playing soccer. In the f
ollowing months the ankle was swollen and painful. Later the reason fo
r his ankle pain was clearly visible on the X-ray pictures, which reve
aled a severe osteochondral fracture of the lateral tibial pilon. We d
escribe the arthroscopic and X-ray grading of osteochondral fractures
of the ankle and their treatment.