What is stress fracture?

Injury to the bone. Bone is constantly being broken down and re-built. With repetitive activity, it may break down more than it repairs itself resulting in a fracture of the bone. Rest, sometimes immobilization, and rarely surgery are treatment options.
STRESS FX. This results from repetitive, excessive load on a bone, resulting in micro fractures, a stress reaction to the bone, and finally, a stress fx.