Unlocking of knee is done by which muscle: September 2009, March 2013 (d, e, h)
Ans. C: Popliteus Popliteus muscle Origin: Lateral surface of lateral condyle of femur Inseion: Posterior surface of shaft of tibia above soleal line Nerve supply: Tibial nerve L4, 5; S1 Action: Flexes leg at knee joint; unlocks knee joint by lateral rotation of femur on tibia and slackens ligaments of joint
Adductor magnus
Biceps femoris
Popliteus
Saorius