The injury occurs from overuse and repetitious movements and increases in volume of sport (particularly an over emphasis on one type of sport). Children are especially susceptible because they have spongy growth plates and they are gaining more height, mass and power through their body at this time. There are also biomechanical factors that add to this problem such as over-pronation of feet, leg-length discrepancies, poor pelvic stability and internal rotation of the tibia
