This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
True regarding knee movements are all except 
Select and explain. 
A. Flexion is coupled with lateral rotation, B. Differential motion in lateral & medial compartments, C. Posterior horn of menisci move more than anterior, D. In full extension collateral ligaments are taut
C: Posterior horn of menisci move more than anterior
Answer: C: Posterior horn of menisci move more than anterior 
Explanation: During last stages of extension, femur rotates medially on tibia due to quadriceps femoris to lock the knee joint. Femur rotates laterally on tibia during flexion. 
In lateral and medial tibio femoral compartments there is a differential motion, where lateral compartment shows a higher relative motion than the medial. The anterior horns move more than the posterior.