Which ligament resists valgus stress at the knee?

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Multiple Choice

Which ligament resists valgus stress at the knee?

Explanation:
Valgus stress is a force that pushes the knee inward, opening the medial side. The medial collateral ligament, which runs along the inner aspect of the knee from the femur to the tibia, is the primary restraint to that inward opening. When a valgus force is applied, the MCL becomes taut and helps keep the knee from collapsing medially, making it the main stabilizer against valgus stress. The lateral collateral ligament resists varus stress (opening the outer side), while the ACL and PCL mainly control anterior-posterior movement and rotation rather than valgus opening. So the ligament best suited to resist valgus stress at the knee is the medial collateral ligament.

Valgus stress is a force that pushes the knee inward, opening the medial side. The medial collateral ligament, which runs along the inner aspect of the knee from the femur to the tibia, is the primary restraint to that inward opening. When a valgus force is applied, the MCL becomes taut and helps keep the knee from collapsing medially, making it the main stabilizer against valgus stress. The lateral collateral ligament resists varus stress (opening the outer side), while the ACL and PCL mainly control anterior-posterior movement and rotation rather than valgus opening. So the ligament best suited to resist valgus stress at the knee is the medial collateral ligament.

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