The adductor hallucis muscle is located on sole of the foot. It adducts the big toe, moving it closer to the smaller toes. The muscle separates into two heads: the transverse and oblique heads. The transverse goes over the sole of the foot under all of the smaller toes and the oblique adheres to the big toe’s lower bone. The other end of the oblique head attaches to a bone that is in front of the heel.