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Foot - Intrinsic Dorsal
Extensor digitorum brevis:
  • Originates on the superolateral surface of the calcaneus
  • Inserts at the extensor hoods, which arise on the dorsal surfaces of the toes
  • Extends toes 2-4.
Extensor hallucis brevis:
  • Originates on the dorsal surface of the calcaneus
  • Inserts at the base of the distal phalanx of the great toe
  • Extends the great toe.
Extension of toe 5 comes from extensor digitorum longus (which lies within the leg).

Foot - Intrinsic Dorsal