Pain in the Hand After Punching a Wall

Case
An 18-year-old man presents to an urgent care center with pain at the distal aspect of the metacarpal bone of the little finger. The pain began 2 hours earlier, after he punched a wall. He has pain with range of motion and a minimal amount of numbness in the finger. He reports that he has no other injuries.

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