Case series analyzing 39 game videos (17 male, 22 female basketball players) to characterize ACL injury mechanisms. Six experts assessed playing situation, player behavior, and lower-extremity kinematics at ground contact and 50 ms later. The study asks: how do sex, contact status, and opponent perturbation shape the ACL injury event in basketball?
The 17–50 ms window from foot contact to ACL rupture is the core teaching of this paper. No athlete can consciously correct their landing mechanics in that timeframe — which means prevention programs that rely on cognitive cueing during activity are targeting the wrong moment.
When designing or prescribing ACL prevention training for female basketball players, prioritize valgus control under distraction. The finding that half of injured women had been pushed or collided before injury means drills performed in quiet, controlled settings (classic jump-training protocols) underestimate the neuromuscular demand of real game situations.
The data also challenge a common assumption: female players in this series landed with more knee and hip flexion than males, not less. This weakens the quadriceps drawer theory as the dominant female mechanism and strengthens the case for valgus-rotatory loading as the primary ACL threat in women.
This paper directly supports Hewett's prospective work showing that valgus loading at landing predicts ACL injury. Together, these two studies form the biomechanical and epidemiologic foundation for programs like PEP and ACL-prevention neuromuscular training that emphasize knee-over-toe alignment and core stability in realistic, game-like drills.
Case series analyzing 39 game videos (17 male, 22 female basketball players) to characterize ACL injury mechanisms. Six experts assessed playing situation, player behavior, and lower-extremity kinematics at ground contact and 50 ms later. The study asks: how do sex, contact status, and opponent perturbation shape the ACL injury event in basketball?
The 17–50 ms window from foot contact to ACL rupture is the core teaching of this paper. No athlete can consciously correct their landing mechanics in that timeframe — which means prevention programs that rely on cognitive cueing during activity are targeting the wrong moment.
When designing or prescribing ACL prevention training for female basketball players, prioritize valgus control under distraction. The finding that half of injured women had been pushed or collided before injury means drills performed in quiet, controlled settings (classic jump-training protocols) underestimate the neuromuscular demand of real game situations.
The data also challenge a common assumption: female players in this series landed with more knee and hip flexion than males, not less. This weakens the quadriceps drawer theory as the dominant female mechanism and strengthens the case for valgus-rotatory loading as the primary ACL threat in women.
This paper directly supports Hewett's prospective work showing that valgus loading at landing predicts ACL injury. Together, these two studies form the biomechanical and epidemiologic foundation for programs like PEP and ACL-prevention neuromuscular training that emphasize knee-over-toe alignment and core stability in realistic, game-like drills.