This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Posterior Compartment of Thigh & Popliteal Fossa, Subject name: Anatomy
Action of popliteus muscle - 
Select and explain. 
A. Medial rotation of femur, B. Lateral rotation of femur, C. L ocking of knee, D. Extension of knee
B: Lateral rotation of femur
Answer: B: Lateral rotation of femur 
Explanation: Ans. is 'b' i.e., Lateral rotation of femur Popliteuso Popliteus is a deep muscle of posterior compartment of leg.o Features of popletius are -OriginLateral surface of lateral condyle of femur, origin is intracapsular.Outer margin of lateral meniscus of knee,insertionPosterior surface of shaft of tibia above soleal line.Nerve supplyTibial nerveActionClocks knee joint by lateral rotation of femur on tibia prior flexion.Accessory flexor of knee