The abductor hallucis is an intrinsic muscle of the foot. It is located within the first (most superficial) plantar muscle layer of the foot.
- Attachments: Originates from the medial tubercle of the calcaneus, the flexor retinaculum and the plantar aponeurosis. It attaches to the medial base of the proximal phalanx of the great toe.
- Actions: Abduction and flexion of the great toe.
- Innervation: Medial plantar nerve (branch of the tibial nerve).
- Blood Supply: Medial plantar and plantar metatarsal arteries