The Association Between Functional Movement Screen Scores and Knee Valgus Moments During Unplanned Sidestep Cutting in Netball.
Desmond Boey, Marcus Lee
PMID 36793577WHAT IT FOUND
Functional Movement Screen scores did not correlate with knee valgus moments during unplanned sidestep cutting in female netballers.
A low composite score cannot be used to infer high ACL injury risk during this specific sport maneuver. Screening tools must better replicate the unplanned, high-velocity nature of the movement to predict risk.
Key findings
01No significant correlations were found between peak knee valgus moments during unplanned sidestep cutting and any FMS composite or component scores.
02The Hurdle Step test, which most closely resembles the sidestep cutting posture, showed a trend toward correlation but did not reach statistical significance.
03The study analyzed data from only 13 participants, all using their left leg, which was the non-dominant leg for the majority of the sample.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The sample size was small, with only 13 participants analyzed. Only the left leg was tested due to logistical constraints, which was the non-dominant leg for most participants, so findings may not apply to the dominant leg. The FMS was modified by removing the shoulder mobility test and using half-point scoring, which differs from the standard protocol. The study measured knee valgus moments in a laboratory setting, which may not fully replicate the complex environment of actual gameplay.
Declared interests
The authors declared no funding resources and no conflicts of interest.
The easy way to misread this
Do not assume that a low Functional Movement Screen score indicates a high risk of ACL injury during sidestep cutting. This study found no correlation between the two. The FMS may still have value for identifying general musculoskeletal issues, but it failed to predict the specific knee mechanics associated with this high-risk ACL mechanism in netballers.