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
Action of popliteus muscle ? 
Select and explain. 
A. Medial rotation of femur, B. Lateral rotation of femur, C. Locking 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 Ponliteus Popliteus is a deep muscle of posterior compament of leg. Features of popletius are ? Origin Lateral surface of lateral condyle of femur, origin is intracapsular. Outer margin of lateral meniscus of knee. Inseion Posterior surface of shaft of tibia above soleal line. Nerve supply Tibial nerve Action Ulocks knee joint by lateral rotation of femur on tibia prior flexion. Accessory flexor of knee