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A stress fracture is a tiny crack in the bone from chronic overuse. Most stress fractures occur in the lower leg and foot. They can also occur in the hip and other areas..
A blow to the bone does not cause a stress fracture. Rather, it is typically caused by repeated stress or overuse. Some causes are:
- Increasing the amount or intensity of an activity too quickly (most common)
- Switching to a different playing or running surface
- Wearing improper or old shoes
Stress fractures can worsen by continued physical stress. Smoking can also make stress fractures worse because it interferes with bone healing.
A risk factor is something that increases your chance of getting a disease or condition. Risk factors for a stress fracture include:
- Sex: female
Certain sports, especially involving jumping or running:
- Track, especially distance running
- Amenorrhea (women only)
- Reduced bone thickness or density
- Poor muscle strength or flexibility
- Overweight or underweight
- Poor physical condition
- Localized pain on the bone
- Pain when pressure is applied directly over the fracture and the area around it
- Pain when putting stress on the affected leg
- Swelling and warmth at injury site