Plantaris

Position

• Mainly superficial

Insertion

• Lateral condyle femur
• Supracondylar line femur
  • Distal and lateral aspect

Insertion

• Calcaneus
  • Posterior surface

Main function

• Ankle
  • Plantarflexion
• Knee
  • Flexion

Nerve innervation

• Segmental
  • S1-S2
• Peripheral
  • Tibial nerve

Arterial supply

• Popliteal artery sural branch

• Patient position
  • Prone with full extension of the knee
• Place your hand on the posterior aspect of the knee joint and feel medially towards the insertion of biceps femoris and the lateral head of gastrocnemius
• Feel for contraction in the muscle while you ask the patient to plantarflex the ankle and flex the knee