 Of those, about three million athletes age 14 years and under experience a sports injury annually.According to a study performed at Stanford University, 21 percent of the injuries observed in elite college athletes caused the athlete to miss at least one day of sport, and approximately 77 percent of these injuries involved the lower leg, ankle, or foot.In addition to those sport injuries, the leading cause of death related to sports injuries is traumatic head or neck occurrences.