POPLITEUS

ORIGIN
Posterior shaft of tibia above soleal line and below tibial condyles
INSERTION
Middle of three facets on lateral surface of lateral condyle of femur. Tendon passes into capsule of knee to posterior part of lateral meniscus
ACTION
Unlocks extended knee by lateral rotation of femur on tibia. Pulls back lateral meniscus
NERVE
Tibial nerve (L5,S1)