Bilateral femoral neck stress fractures in an adolescent male runner. A case report

Stress fractures occur as a result of repetitive loading, which can lead to mechanical failure and fracture of the bone.10 These fractures occur when an essentially normal bone is unable to respond adequately to abnormal stresses (fatigue fractures) or when abnormal bone is unable to compensate for normal stresses (insufficiency fractures).11 Frequently, stress fractures are sports-related injuries. They account for up to 10 % of all injuries seen by sports medicine physicians and up to 15 % of injuries to run-ners.12 They occur most commonly in the tibia and are progressively less common in the tarsals, metatarsals, femur, fibula, pelvis, sesamoids, and spine. Femoral neck stress fractures have been reported pri-marily in the older adult population and in military per-sonnel.2,5,17 They account for approximately 11 % of stres