Popliteus Anatomy

Popliteus Muscle

Origin:  The lateral surface of the lateral condyle of the femur
Insertion: Medial 2/3rds of the triangular area above the soleal line on the posterior surface of the tibia
Actions: Internal rotation of the knee
Innervation: Tibial nerve (L4, L5, S1)
Blood Supply: Popliteal artery

Primary Actions of the Popliteus Muscle

1. Internal rotation of the leg at the knee

Agonists:

  • Semitendinosus
  • Semimembranosus

  Antagonists:

  • Biceps femoris

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Secondary Actions of the Popliteus Muscle

1.  Flexion of the leg at the knee

Agonists:

  • Biceps femoris
  • Semitendinosus
  • Semimembranosus

Antagonists:

  • Vastus lateralis
  • Vastus medialis
  • Vastus intermedius
  • Rectus femoris