Knee collapses on the lateral and diagonal positions
Frontal plane lunges expose the most valgus weakness.
Overactive muscles
Adductor complexTFL
Corrective work
Foam RollAdductors↗Foam RollTFL↗StretchButterfly adductor stretch↗Frontal plane lunges expose the most valgus weakness.
Single-leg stability fails when returning from the cross-behind position.