Author: Dr Peter de Souza
Last modified: 18 November 2022

The abductor hallucis is one of the intrinsic muscles within the first layer of the plantar muscles of the foot.

The intrinsic muscles of the foot consist of one intrinsic muscle on the dorsal aspect of the foot (the extensor digitorum brevis), and 4 layers of muscles on the plantar aspect of the foot:

  • 1st layer: abductor hallucis, flexor digitorum brevis, abductor digiti minimi
  • 2nd layer: quadratus plantae, lumbricals
  • 3rd layer: flexor hallucis brevis, adductor hallucis, flexor digiti minimi brevis
  • 4th layer: dorsal interosseri, plantar interossei

Origin

  • Medial process calcaneal tuberosity

Insertion

  • Medial plantar aspect of proximal phalanx of great toe

Action

  • Abducts great toe at metatarsophalangeal joint
  • Flexes great toe at metatarsophalangeal joint

Innervation

  • Medial plantar nerve from tibial nerve: S2,S3

Blood Supply

  • Medial plantar artery