Which ligament resists posterior tibial translation?

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Multiple Choice

Which ligament resists posterior tibial translation?

Explanation:
Posterior tibial translation is limited mainly by the posterior cruciate ligament. The PCL runs from the back of the tibia up to the femur and tightens when the tibia tends to move backward under the femur, especially as the knee flexes. This makes it the primary restraint to posterior movement in the knee’s sagittal plane. By contrast, the anterior cruciate ligament resists forward (anterior) translation of the tibia, while the medial and lateral collateral ligaments stabilize against valgus and varus forces rather than controlling posterior translation.

Posterior tibial translation is limited mainly by the posterior cruciate ligament. The PCL runs from the back of the tibia up to the femur and tightens when the tibia tends to move backward under the femur, especially as the knee flexes. This makes it the primary restraint to posterior movement in the knee’s sagittal plane. By contrast, the anterior cruciate ligament resists forward (anterior) translation of the tibia, while the medial and lateral collateral ligaments stabilize against valgus and varus forces rather than controlling posterior translation.

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