The purpose of this study is to compare outcomes (failure, function, strength, range of motion and quality of life) between patients who receive the usual anterior cruciate ligament (ACL) reconstructive surgery and patients who receive anterior cruciate ligament reconstructive surgery with a lateral extra-articular tenodesis (extra tendon repair on the outside of the knee). Some studies have shown high graft failure rates (ACL re-tear) in young individuals who return to pivoting contact sports following ACL reconstruction. This study is designed to look at whether or not adding this extra tendon repair reduces the risk of graft failure in this population.