Structures

  • Popliteus
  • Flexor hallucis longus
  • Flexor digitorum longus
  • Tibialis posterior

MuscleActionOriginInsertionInnervationBlood supply
Popliteus- Unlocks knee joint (laterally rotates femur on fixed tibia)- Posterior surface of proximal tibia- Lateral femoral condyle- Tibial nerve: L4-S1- Popliteal artery
- Posterior tibial artery
Flexor hallucis longus- Flexes great toe- Posterior surface of fibula and adjacent interosseous membrane- Plantar surface of distal phalanx of great toe- Tibial nerve: S2 ,S3- Peroneal artery
- Posterior tibial artery
Flexor digitorum longus- Flexes lateral four toes- Medial side of posterior surface of the tibia- Plantar surfaces of bases of distal phalanges of the lateral four toes- Tibial nerve: S2 ,S3- Posterior tibial artery
Tibialis posterior- Inversion and plantarflexion of foot
-Support of medial arch of foot during walking
- Posterior surfaces of interosseous membrane and adjacent regions of tibia and fibula- Tuberosity of navicular and adjacent region of medial cuneiform- Tibial nerve: L4,L5- Sural arteries
- Peroneal artery
- Posterior tibial artery