Ankle Injury Sustained by a Young Athlete

An 18-year-old high school lacrosse player presents to an urgent care center with a painful left ankle. He states that the pain started 2 days earlier when he twisted his left ankle (an inversion injury) while competing in a tournament. He says that he tried to continue to play, but the pain increased. He reports that the ankle swelled over the lateral aspect and that he has pain when he walks. He says that he does not feel any numbness, pain in the medial ankle, or pain in the proximal tibia or fibula, and reports that he does not have any other injuries.

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