Flexor Digiti Minimi Brevis Muscle Anatomy

Flexor digiti minimi brevis of the hand is variable in size; it lies lateral to abductor digiti minimi muscle. It’s one of the hypothenar muscles of the hand. The flexor digiti minimi brevis flexes the proximal phalanx of the 5th finger at the metacarpophalangeal joint.

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

Flexor Digiti Minimi Brevis Muscle

The Flexor Digiti Minimi Brevis Muscle originates from the hook of hamate and flexor retinaculum (Transverse carpal ligament) and inserts onto the medial side of base of the proximal phalanx of the little finger.

It’s innervated by the deep branch of Ulnar nerve, and gets its blood supply from the ulnar artery.

The Flexor Digiti Minimi Brevis Muscle action is to flex the Metacarpophalangeal joint of the little finger.

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. Clinically Oriented Anatomy – 8th Edition
4. Physiopedia – Flexor Digiti Minimi Brevis