The knee joint is most vulnerable to valgus collapse when the hip's abductors are underactive because they cannot resist which combined force at the knee?

The knee joint is most vulnerable to valgus

Multiple choice — select the best answer

AAnterior cruciate ligament compression from quadriceps dominance alone
BLateral tibial torsion and peroneal overpull
CMedial femoral rotation and adduction converging on the tibia
DExcessive knee hyperextension and posterior tibial glide

✓ Correct answer: C. Medial femoral rotation and adduction converging on the tibia Weak hip abductors (primarily gluteus medius) fail to prevent femoral adduction and internal rotation; this medial collapse of the femur toward an externally rotated tibia creates the characteristic valgus stress pattern at the knee joint.

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The knee joint is most vulnerable to valgus collapse when the hip's abductors are underactive because they cannot resist which combined force at the knee?

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