Structures

  • Extensor hallucis longus
  • Extensor digitorum longus
  • Extensor digitorum brevis
  • Lumbricals

MuscleActionOriginInsertionInnervationBlood supply
Extensor hallucis longus- Extension of great toe
- Dorsiflexion of foot
- Middle 1/2 of medial fibula
- Interosseous membrane
- Dorsal base of distal phalanx of great toe- Deep fibular nerve: L5,S1- Anterior tibial artery
Extensor digitorum longus- Extension of lateral four toes
- Dorsiflexion of foot
- Proximal 1/2 medial surface of fibula
- Lateral tibial condyle
- Via 4 tendons into bases of distal and middle phalanges of lateral four toes- Deep fibular nerve: L5,S1- Anterior tibial artery
Extensor digitorum brevis- Extension of great toe at metatarsophalangeal joint
- Flexion of toes II to IV
- Superolateral calcaneus- Base of proximal phalanx of great toe
- Lateral portion of tendons of extensor digitorum longus of toes II to IV
- Deep fibular nerve: S1,S2- Dorsalis pedis artery
Lumbricals- Flexion of metatarsophalangeal joint
- Extension of interphalangeal joints
- Tedons of flexor digitorum longus- Medial extensor hoods of toes II to V- Medial plantar nerve from tibial nerve: S2,S3- Plantar metatarsal artery