Structure
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.
Read more about this topic: Flexor Digiti Minimi Brevis Muscle (hand)
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