Which of the following statements is/are true?
A. During extension, the femur must slide backwards on the tibia.
B. When the knee undergoes a significant amount of flexion, it is necessary for the femur to slide forward on the tibia in order to prevent its rolling off of the tibial plateau.
C. Both when the knee undergoes a significant amount of flexion, it is necessary for the femur to slide forward on the tibia in order to prevent its rolling off of the tibial plateau and during extension, the femur must slide backwards on the tibia.
D. None of these answers is correct.
Answer: C
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