A new study from Oslo Sports Trauma Research Center showed that “valgus collapse” is very common in non-contact ACL injuries. This is another indication that valgus loading likely is an important factor in such injuries – in particular in women.
This study also contained another interesting finding – the hip and kneeflexion angles were on average higher in females compared with males, both at the initial contact and at the estimated time of injury. Additionally, the findings of this study indicated that the actions of the opponents, either by direct contact or movements prior to the injury may have altered the landing/fake maneuver of the injured player. These findings support the idea that preventive programs should focus on avoiding valgus motion in exercises that includes perturbations and other “disturbing factors”.
This study was part of the PhD thesis of Tron Krosshaug. Co-authors were Atsuo Nakamae, Barry Boden, Lars Engebretsen, Gerald Smith, James R. Slauterbeck, Tim Hewett and Roald Bahr.
Read the article here.
Read the Editorial in the Am J Sp Med here!