The abductor digiti minimi is a hypothenar muscle located in the hand and is the most superficial of the hypothenar muscles. It is responsible for the abduction of the little finger, and its various attachments, innervation, and blood supply are described in detail below.
The abductor digiti minimi is attached to the pisiform bone and the tendon of the flexor carpi ulnaris from the hand. It then runs down to the base of the proximal phalanx of the little finger.
The abductor digiti minimi is primarily responsible for the abduction of the little finger, which allows it to move away from the other fingers. This muscle helps ensure that the little finger remains separate and distinct from the other fingers when gripping something, thus aiding in dexterity.
The abductor digiti minimi is innervated by the ulnar nerve. This nerve is responsible for the conduction of signals from the brain to the muscle, which then allows it to move accordingly.
The abductor digiti minimi is primarily supplied with blood from the deep palmar arch. This arch, which contains an artery and a vein, supplies this muscle as well as the other muscles in the hypothenar.
Figure 1 shows the various layers of muscles which make up the hypothenar. The abductor digiti minimi is the most superficial muscle in this region and is located at the very top of the figure. All of the other muscles are organized by their respective layers and given unique titles to differentiate them from one another.
This is a brief overview of the abductor digiti minimi, a hypothenar muscle located in the hand. It is responsible for the abduction of the little finger, and is attached to the pisiform and the tendon of the flexor carpi ulnaris, is innervated by the ulnar nerve, and receives its blood supply from the deep palmar arch. Figure 1 displays the different layers of hypothenar muscles, with the abductor digiti minimi located at the top.
