Brief summary, from the abstract
In female athletes after ACL reconstruction, simple 2D video measures of movement during dynamic tasks predicted who later suffered a second non-contact ACL injury, suggesting these low-cost measures could help guide return-to-sport decisions.
- Retrospective case-control study: 23 non-contact ACL reinjuries matched to 57 non-injured athletes (from a cohort of N=345), each assessed with 2D video across six dynamic tasks before returning to sport.
- Four of five 2D movement surrogates independently predicted reinjury after adjusting for confounders; each additional task with high-risk movement raised the odds: trunk-tibia angle OR 1.75 (95% CI 1.24 to 2.47, p=0.001), thigh angle OR 1.69 (95% CI 1.14 to 2.50, p=0.01), frontal plane projection angle OR 2.29 (95% CI 1.13 to 4.65, p=0.02), and pelvis tilt OR 1.85 (95% CI 1.16 to 2.95, p=0.01).
- The trunk-tibia angle composite score was the strongest single predictor.
- Evidence is limited: a single retrospective case-control study with a small number of reinjuries (n=23), so findings need prospective confirmation.
Clinically assessing this area? See the knee special tests.