Wednesday, March 24, 2010
Stress Fractures are common overuse injuries of bone resulting from the repeated application of a sub maximal load. These injuries occur mostly in runners, particularly in the tibia due to the bone not been able to handle the repetitive load.
When a load is put through the leg via ground reaction forces (landing on the ground) it causes microdamage to the bone. Normally the body then repairs and remodels the bone to strengthen it. Stress fractures occur when the bone does not have enough time to repair itself and this micro damage accumulates over time to form a “crack”.
Studies have found that the major risk factors for stress fractures are; low bone density, abnormal muscle function, diet, menstrual disturbances, footwear and, a previous fracture and overtraining. So the best prevention is to manage these factors.
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