Abductor Digiti Minimi Muscle Anatomy

The Abductor digiti minimi is the most superficial of the three muscles forming the hypothenar eminence. The abductor digiti minimi abducts the 5th finger and helps flex its proximal phalanx.

The hypothenar muscles (abductor digiti minimi, flexor digiti minimi brevis, and opponens digiti minimi) produce the hypothenar eminence on the medial side of the palm and move the little finger.

Abductor Digiti Minimi Muscle Anatomy

The Abductor digiti minimi muscle originates from the pisiform, tendon of flexor carpi ulnaris and pisohamate ligamen, and inserts onto the ulnar side of base of 5th proximal phalanx.

It’s innervaed by the ulnar nerve (C8, T1) through the deep branch, and supplied by the ulnar artery.

Its action is to abucts the 5th finger at the metacarpophalangeal joint.

See Also: Hand Anatomy, Bones & Muscles

References & More

1. Cael, C. (2010). Functional anatomy: Musculoskeletal anatomy, kinesiology, and palpation for manual therapists. Philadelphia, PA: Wolters Kluwer Health/Lippincott, Williams & Wilkins.
2. Moore, K. L., Dalley, A. F., & Agur, A. M. R. (2014). Clinically Oriented Anatomy (7th ed.). Philadelphia, PA: Lippincott Williams & Wilkins.
3. Physiopedia – Abductor Digiti Minimi