A stress fracture, commonly known as a hairline fracture, is a bone injury that shows signs of cracks or other fissures in the bones.
It is common in athletes and among military people, as well as those who play high-impact sports, but also with children who have not yet fully developed their bones. It is also prevalent in people with osteoporosis or other bone problems.
1Repetitive Stress: A cause for hairline fracture
A hairline fracture happens due to overuse of certain bones. If you play repetitive sports like rowing or bowling in cricket or high impact sports, then your bones might slowly develop a fine fracture due to the repeated stress.
Bones constantly ‘remodel’ and repair themselves through osteoblasts, cells that are responsible for synthesis and mineralization of bone during bone formation and remodeling. When the bones are hurt at a rate that overwhelms the osteoblasts, it leads to damage.