Stress Fracture
A small crack in bone caused by repetitive force or overuse, typically occurring in weight-bearing bones.
Full Definition
A stress fracture is a small crack in bone that develops gradually due to repetitive force, overuse, or normal forces applied to abnormal bone. These fractures commonly occur in weight-bearing bones of the lower extremities, particularly the metatarsals, tibia, and femur, though they can affect any bone subjected to repetitive stress. Stress fractures are often seen in athletes, military personnel, and individuals who suddenly increase their activity level. Unlike acute fractures, stress fractures develop insidiously and may initially show normal radiographs, requiring advanced imaging such as MRI or bone scan for diagnosis. Treatment typically involves activity modification, rest, and gradual return to activity once healing occurs.
Usage
Usage note: Distinguish from acute traumatic fractures; may require advanced imaging for diagnosis when X-rays are normal.
In Context
- "MRI revealed a stress fracture of the second metatarsal despite normal initial radiographs." — Diagnostic imaging report
- "The marathon runner developed a tibial stress fracture after increasing training intensity." — Sports medicine consultation