Dynamic knee valgus is characterized by which movement pattern?

Dynamic knee valgus is characterized by which movement pattern?

• A. Excessive femoral internal rotation and adduction with tibial abduction
• B. External rotation of the femur
• C. Tibial external rotation with no femoral motion
• D. Ankle dorsiflexion limitation

Answer: (A)

Dynamic knee valgus occurs when the thigh rotates inward and moves toward the midline (femoral internal rotation with hip adduction) while the lower leg moves outward (tibial abduction). This combination pulls the knee into a medial collapse during dynamic tasks like landing or cutting, creating that characteristic valgus alignment. External rotation of the femur would tend to open the knee laterally rather than produce valgus, and tibial external rotation with no femoral motion or ankle dorsiflexion limitation don’t capture the medial knee collapse pattern seen in dynamic knee valgus.

Dynamic knee valgus occurs when the thigh rotates inward and moves toward the midline (femoral internal rotation with hip adduction) while the lower leg moves outward (tibial abduction). This combination pulls the knee into a medial collapse during dynamic tasks like landing or cutting, creating that characteristic valgus alignment. External rotation of the femur would tend to open the knee laterally rather than produce valgus, and tibial external rotation with no femoral motion or ankle dorsiflexion limitation don’t capture the medial knee collapse pattern seen in dynamic knee valgus.