system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Unlocking of knee is done by which muscle:September 2009, March 2013 (d, e, h)
assistant
The correct answer is  Ans. C: PopliteusPopliteus muscleOrigin: Lateral surface of lateral condyle of femurInseion: Posterior surface of shaft of tibia above soleal lineNerve supply: Tibial nerve L4, 5; S1Action: Flexes leg at knee joint; unlocks knee joint by lateral rotation of femur on tibia and slackens ligaments of joint