The adductor hallucis is an intrinsic muscle of the foot. It is located within the third plantar muscle layer of the foot and has two heads – oblique and transverse.
- Oblique head – originates from the bases of the 2nd, 3rd, and 4th metatarsals.
- Transverse head – originates from the plantar ligaments of the metatarsophalangeal joints.
- Both heads attach to the lateral aspect of the base of the proximal phalanx of the great toe.
- Actions: Adduction of the great toe. Supports the transverse arch of the foot.
- Innervation: Deep branch of lateral plantar nerve.
- Blood Supply: Medial plantar artery