The adductor hallucis muscle is a muscle located in the foot. It is one of several muscles that make up the intrinsic muscle group of the foot, which are responsible for moving the toes. The adductor hallucis muscle is responsible for adducting the hallux, which is the medical term for the big toe. This means that it helps to move the big toe towards the midline of the body. This movement is important for balancing and maintaining a stable base of support when standing or walking.

The adductor hallucis muscle has two heads: the oblique head and the transverse head. The oblique head originates from the bases of the second, third, and fourth metatarsal bones, and inserts onto the lateral aspect of the base of the proximal phalanx of the big toe. The transverse head originates from the lateral aspect of the base of the fifth metatarsal bone, and inserts onto the lateral aspect of the base of the proximal phalanx of the big toe.

One example of how the adductor hallucis muscle is used is when you walk on a narrow surface, such as a tightrope or a narrow plank of wood. In order to maintain your balance, you need to keep your feet close together, which requires adduction of the big toe. This movement is facilitated by the adductor hallucis muscle.

Some other examples of usage: