Brief summary, from the abstract
In asymptomatic women, the link between hip muscle strength and dynamic knee valgus depends on the movement being tested: weaker hips were tied to more valgus during single-leg ballistic landings, but not during double-leg landings or single-leg squats.
- Across the included studies the picture was mixed: 8 studies linked stronger hips to less valgus, 5 found no relationship, and 3 found the opposite.
- Meta-analysis showed weaker hip strength paired with greater dynamic lower extremity valgus only for ballistic single-leg landing, not for double-leg landing or single-leg squat tasks.
- This is a systematic review and meta-analysis of asymptomatic women over 18, searching four databases (CINAHL, SPORTDiscus, Embase, Ovid MEDLINE) in February 2017.
- The relationship appears task-specific rather than universal, so results should not be generalized across all movement types.
Clinically assessing this area? See the knee special tests.