Anterior Fascial Compartment of Leg

• Tibialis Anterior

  
  

  Origin: Lateral surface of tibia and interosseous membrane

  Insertion: Medial cuneiform and base of first metatarsal bone

  Nerve: Deep peroneal nerve

  Action: Extends foot at ankle joint; inverts foot at subtalar and transverse tarsal joints; holds up medial longitudinal arch of foot
• Extensor Digitorum Longus

  
  

  Origin: Anterior surface of shaft of fibula

  Insertion: Extensor expansion of lateral four toes

  Nerve: Deep peroneal nerve

  Action: Extends toes; extends foot at ankle joint
• Peroneus tertius

  
  

  Origin: Anterior surface of shaft of fibula

  Insertion: Base of fifth metatarsal bone

  Nerve: Deep peroneal nerve

  Action: Extends foot at ankle joint; everts foot at subtalar and transverse tarsal joints
• Extensor hallucis longus

  
  

  Origin: Anterior surface of shaft of fibula

  Insertion: Base of distal phalanx of great toe

  Nerve: Deep peroneal nerve

  Action: Extends big toe; extends foot at ankle joint; inverts foot at subtalar and transverse tarsal joints
• Extensor digitorum brevis

  Origin: Calcaneum

  Insertion: By four tendons into the proximal phalanx of big toe and long extensor tendons to second, third, and fourth toes

  Nerve: Deep peroneal nerve

  Action: Extends toes