The most commonly injured areas of the body include the ankle and knee followed by the hand, wrist, elbow, shin and calf, head, neck and clavicle. Contusions and strains are the most common injuries sustained by young athletes. In early adolescence, apophysitis or strains at the apophyses are common. The most common sites are at the knee
(Osgood-Schlatter disease), at the heel (Sever’s disease) and at the elbow (Little League Elbow). Pg. 75