Dynamic knee valgus is characterized by:

Dynamic knee valgus is characterized by:

• A. Excessive hip adduction, femoral external rotation, lateral deviation of the knee with tibial adduction toward midline
• B. Excessive hip abduction, femoral internal rotation, medial deviation of the knee with tibial abduction away from midline
• C. No hip movement with knee valgus
• D. Medial rotation of tibia with knee valgus

Answer: (B)

Dynamic knee valgus arises from a proximal-to-distal chain where the hip moves off the midline and the knee collapses inward under load. In this pattern, excessive hip abduction allows the thigh to drift away from the body's midline, while the femur internally rotates. This combination pushes the knee into a valgus position as the tibia moves away from the midline in the frontal plane, resulting in medial deviation of the knee during weightbearing tasks. This description fits the chosen statement: the hip moves into abduction with the femur internally rotated, the knee shows medial deviation (valgus), and the tibia abducts away from midline as the leg collapses. The other options either imply opposite hip motion, no hip contribution, or mismatched tibial rotation, which don’t reflect the typical proximal drivers of dynamic knee valgus.

Dynamic knee valgus arises from a proximal-to-distal chain where the hip moves off the midline and the knee collapses inward under load. In this pattern, excessive hip abduction allows the thigh to drift away from the body's midline, while the femur internally rotates. This combination pushes the knee into a valgus position as the tibia moves away from the midline in the frontal plane, resulting in medial deviation of the knee during weightbearing tasks.

This description fits the chosen statement: the hip moves into abduction with the femur internally rotated, the knee shows medial deviation (valgus), and the tibia abducts away from midline as the leg collapses. The other options either imply opposite hip motion, no hip contribution, or mismatched tibial rotation, which don’t reflect the typical proximal drivers of dynamic knee valgus.