The abductor digiti minimi muscle of foot is a muscle attached to the small toe that serves to pull that toe away from the other toes. It runs from the outer front of the heel bone and along the side of the foot to insert at the proximal phalanx. Generally, abduction refers to movement of a limb away from the central line of the body or of a digit away from the axis of a limb. Muscles, then, that carry out this type of movement are called abductor muscles.