Tibial stress fractures are most closely associated with which pattern of injury?

• A. Osteoarthritis
• B. Contusions from contact sports
• C. Acute traumatic tibial fracture
• D. Repetitive overuse injuries in runners

Answer: (D)

Tibial stress fractures come from repetitive overuse, where cyclic loading from running causes microdamage faster than the bone can repair. The tibia endures repeated impacts with each foot strike, and when a runner abruptly increases mileage or intensity, the accumulated microtrauma leads to a localized stress fracture. This pattern of injury is typical of overuse injuries in runners, rather than a one-time event or a disease process. Osteoarthritis is degeneration of joint tissues over time, not a localized stress response; contusions from contact sports are direct blunt injuries; and an acute traumatic tibial fracture results from a single high-energy impact. So the association with repetitive overuse in runners best describes tibial stress fractures.