Valgus laxity of the knee generally indicates injury to which ligament?

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Multiple Choice

Valgus laxity of the knee generally indicates injury to which ligament?

Explanation:
Valgus laxity means the knee joint opens on the medial side when a valgus (inward) force is applied. The medial collateral ligament resists this movement, so tearing it allows the medial joint space to widen. That’s why valgus laxity most commonly indicates injury to the medial collateral ligament. By contrast, a varus laxity test opens the lateral side, pointing to injury of the lateral collateral ligament and related lateral structures. So the medial collateral ligament tear best fits the finding of valgus laxity.

Valgus laxity means the knee joint opens on the medial side when a valgus (inward) force is applied. The medial collateral ligament resists this movement, so tearing it allows the medial joint space to widen. That’s why valgus laxity most commonly indicates injury to the medial collateral ligament. By contrast, a varus laxity test opens the lateral side, pointing to injury of the lateral collateral ligament and related lateral structures. So the medial collateral ligament tear best fits the finding of valgus laxity.

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