How do I know if I have a stress fracture?
A stress fracture causes localized bone pain that worsens with activity and eases with rest, often at a specific point you can press. Unlike muscle injuries, it hurts even when walking or at night. Confirm with MRI — not X-ray, which misses early stress fractures. Treatment requires 6-12 weeks of no running.
A stress fracture is a tiny crack in bone caused by repetitive overload — typically a 10%+ mileage jump, inadequate calories, poor bone density, or return from time off. Common sites in runners: shin (tibia), metatarsals in the foot, femoral neck, and pelvis. Symptoms: localized pain at a specific point, worse with activity and better with rest, point tenderness when pressed, and pain that may wake you at night in severe cases. Unlike shin splints (which aches diffusely along the bone), a stress fracture hurts at one specific spot. Critical diagnostic: MRI or bone scan, not X-ray. Early stress fractures (first 2-3 weeks) don't show on X-ray. If you suspect a stress fracture, stop running immediately and see a sports doctor within a week. Treatment: 6-8 weeks of no running for tibial or metatarsal fractures, 8-12 weeks for femoral neck or pelvis. You can usually continue non-impact exercise like cycling, swimming, or aqua running during recovery. Return to running gradually over 4-6 weeks after the fracture heals, starting with walk-runs. Prevention: never increase mileage more than 10% per week, eat enough (female runners especially need iron, calcium, vitamin D, and adequate calories), strength train for bone density, and don't ignore early warning pain. Running through a stress fracture can lead to complete fracture requiring surgery.