POPLITEUS
Origin
Post shaft of tibia above soleal line and below tibial condyles
Action
Unlocks extended knee by lat rotation of femur on tibia. Pulls back lat meniscus
Insertion
Middle of three facets on lat surface of lat condyle of femur. Tendon passes into capsule of knee to post part of lat meniscus
Nerve
Tibial N (L5,S1)