Which of the following muscles serves to "unlock" the knee from full extension?

Name: Which of the following muscles serves to "unlock" the knee from full extension?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The popliteus muscle is responsible for "unlocking" the knee from its fully extended position by laterally rotating the femur on the tibia when the foot is fixed or medially rotating the tibia on the femur when the foot is free to move. This action is crucial for initiating knee flexion from a fully extended (locked) position.

Which of the Following Muscles Serves to "Unlock" the Knee