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PCL injury — MSRA MCQ

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ModerateKnee InjuriesPCL injuryMSRA

A 24-year-old cyclist falls onto a flexed knee. Posterior sag is visible and posterior drawer testing is positive, while Lachman testing has a firm endpoint. What is the most likely diagnosis?

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Correct answer: B — Posterior cruciate ligament injury

A direct blow to the anterior tibia with the knee flexed is typical for PCL injury. Posterior sag and posterior drawer are key clinical findings. Isolated low-grade PCL injuries can be rehabilitated, but associated injuries change management.

Reference: Brukner & Khan