valgus collapse
Pronunciation: VAL-gus ko-LAPS
Inward movement of the knee during landing or cutting movements, associated with increased ACL injury risk.
Full Definition
Valgus collapse, also known as dynamic knee valgus, describes the inward movement of the knee joint during weight-bearing activities such as landing from a jump or cutting maneuvers. This movement pattern involves a combination of hip adduction, hip internal rotation, knee abduction, and often ankle pronation. Valgus collapse is considered a significant risk factor for ACL injuries, particularly in female athletes. The pattern is often associated with weakness in hip abductors and external rotators, poor neuromuscular control, and faulty movement mechanics that can be addressed through targeted training programs.
Usage
Usage note: Often assessed during jump-landing tests and single-leg squat evaluations.
In Context
- "Video analysis revealed significant valgus collapse during the athlete's landing technique." — Biomechanical assessment report
- "The injury prevention program targeted reducing valgus collapse through hip strengthening exercises." — Athletic training intervention plan