Ankle Injury Sustained During an Amateur Football Game

A 25-year-old man presents to the urgent care center after a backyard game of football in which he twisted his ankle. Because of alcohol intoxication, he cannot remember the mechanism of injury. He reports isolated right ankle pain and is unable to bear weight. On physical examination, he has pain with palpation of the ankle, but there are no gross signs of deformity. An ankle x-ray has already been done by the time you see the patient, and your findings for that x-ray are negative. As you continue the physical examination, however, you palpate the proximal fibula, and he feels pain, so you order a new x-ray.

View the image taken (Figure 1) and consider what your diagnosis would be.