Teenage girls are most likely to tear their ACLs. Parents say more must be done to protect them‎

Sofia Tepichin was about 30 minutes into her club soccer team practice in October when she spotted a fast-approaching defender. Tepichin joined the growing ranks of female high school athletes tearing their anterior cruciate ligament, a devastating knee injury that researchers are pressing the sports world to take more seriously. Decades of research on prevention methods is available, but parents, researchers and trainers say that teams, coaches and leagues aren't doing enough to protect the girls and educate parents.