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Abductor hallucis muscle (anatomy)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

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

It originates from the:

  • medial process of the calcaneal tuberosity
  • flexor retinaculum
  • plantar aponeurosis

It passes on the medial side of the foot to insert into the:

  • medial sesamoid bone of the hallux
  • medial side of the base of the proximal phalanx of the hallux

Its actions are to:

  • flex the big toe
  • abduct the big toe
  • support the medial longitudinal arch

Abductor hallucis in innervated by the medial plantar nerve (S2, S3).

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