A 28-year-old male presents complaining of anterior shin pain. He shares that he is a runner training for a marathon, and that the pain began toward the end of an 18-mile run. There was no direct trauma.

View the images taken and consider what your diagnosis and next steps would be. Resolution of the case is described on the next page.

Figure 1.
A 28-Year-Old with Tibial Pain After Prolonged Exercise