In briefThe authors compiled data from 20 National Collegiate Athletic Association lacrosse teams to study the relationship between injuries, protective equipment, and game rules. Athletic trainers for each team kept track of Injuries as they occurred. The 586 players sustained 306 injuries for an injury rate of 52.2%. Half the injuries occurred in the lower extremities, which have no protective equipment. The trunk and arms received 39.8% of the injuries, and the head and face received 9.8%, even though the players are required to wear helmets and face masks. Fewer than 10% of the athletes wore mouth guards. The authors concluded that lacrosse equipment and rules need further study.