Which test suggests a posterior cruciate ligament (PCL) injury?

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Multiple Choice

Which test suggests a posterior cruciate ligament (PCL) injury?

Explanation:
The PCL’s main job is to prevent the tibia from moving backward relative to the femur. The posterior drawer test directly checks this posterior translation of the tibia when the knee is bent to about 90 degrees. If the tibia shifts backward more than normal, it points to a PCL injury. The other tests target different structures: the Lachman and anterior drawer tests assess ACL integrity by checking forward tibial translation, while the varus stress test assesses the lateral structures (like the LCL) rather than the PCL.

The PCL’s main job is to prevent the tibia from moving backward relative to the femur. The posterior drawer test directly checks this posterior translation of the tibia when the knee is bent to about 90 degrees. If the tibia shifts backward more than normal, it points to a PCL injury. The other tests target different structures: the Lachman and anterior drawer tests assess ACL integrity by checking forward tibial translation, while the varus stress test assesses the lateral structures (like the LCL) rather than the PCL.

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