Fatigue fractures have been described in almost every bone in the body, but they are more common in the bones of the lower extremities. Fatigue fractures are seen mainly in military personnel especially at basic training center, athletes, ballet dancers, laborers, and even pregnant woman. But they rarely developed at the distal femur of adolescent.

We report a case of fatigue fracture of the distal femur in adolescent who was associated with neithor trauma nor sports activity.