Non-contact ACL injuries represent a major problem in ball/team sports. To prevent such injuries we need to understand their causation. In the present study, we will investigate, in a prospective cohort study, if different biomechanical, neuromuscular and anatomical factors can predict the risk of future ACL rupture. We will also investigate risk factors in a cross-sectional study, by comparing previously injured and non-injured players. The results of this study may reveal important information on how to optimize the effect and duration of current preventive training programs.
All female team handball teams (N=12 teams, approximately 18 players per team, >200 players) of the Norwegian elite series will be tested. Screening tests at the Norwegian School of Sport Sciences during June of 2007. Similar screening tests will be done on new teams/players each season during the next two seasons (2008-2009 & 2009-2010). It is expected that 30-40 new players will need to be tested each year. ACL injuries will be recorded during the next three seasons.
We will use 3D motion analysis and inverse dynamics to calculate net hip, knee and ankle joint kinetics and kinematics. The players will perform side-step cutting and drop-jumps.
In addition, we will do the following tests:
- Hamstrings/quadriceps Strength and strength ratios. Isokinetic.
- Hip abductor strength. Isometric
- Single leg squat. FPPA and subjective assessment by
- Hamstrings mobility
- Knee laxity (Kt1000)
Training methods and participation
KOOS (knee function)