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Flexor digiti minimi brevis
The muscles of the left hand. Palmar surface
Latin musculus flexor digiti minimi brevis manus
Gray's subject #126 464
Origin hamate bone
Insertion    little finger
Artery ulnar artery
Nerve deep branch of ulnar nerve
Actions flexes little finger
Antagonist Extensor digiti minimi muscle

For the muscle of the foot, see Flexor digiti quinti brevis muscle (foot)

The flexor digiti minimi brevis is a muscle in the hand that flexes the little finger. It lies in the same plane as the abductor digiti minimi, on its radial side.



It arises from the convex surface of the hamulus of the hamate bone, and the palmar surface of the flexor retinaculum of the hand, and is inserted into the ulnar side of the base of the first phalanx of the little finger.

It is separated from the abductor digiti minimi, at its origin, by the deep branches of the ulnar artery and the ulnar nerve. This muscle is sometimes not present; in these cases, the abductor digiti minimi is usually larger than normal.

It is a hypothenar muscle.


The flexor digiti minimi brevis, like other hypothenar muscles, is innervated by the deep branch of the ulnar nerve.


The flexor digiti minimi flexes the little finger.


The name of this muscle is Latin for the 'short flexor of the little finger'. Note that brevis is usually included to differentiate it from a longus muscle of the same name. The flexor digiti minimi longus, however, is not found in the typical human, but instead is a rare anatomical variation.

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External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.



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