adductor hallucis muscle

The adductor hallucis is a muscle in the foot that acts on the great toe. It is one of several muscles named for their function of drawing a body part toward the body's midline or the axis of an extremity, in contrast to abductor muscles which draw parts away.1

The adductor hallucis has two heads: the oblique head and the transverse head. Both heads insert on the outer side of the base of the proximal phalanx of the big toe. The oblique head originates from the bases of the second to fourth metatarsal bones, while the transverse head arises from the ligaments of the metatarsophalangeal joints of the third to fifth toes. Its primary action is to flex and adduct the big toe.2