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Flexor digiti minimi brevis - ...


Muscle parts

None

Latin name

Musculus flexor digiti minimi brevis (manus)

Latin muscle parts

None

Group

Hand muscle – hypothenar group

Etymology

In English this muscle’s name is the short muscle that bends the little finger. The word flexor comes from the Latin flectere meaning “to bend.” The term digiti is from the Latin digitus, which originally meant the “pointing thing,” a term that is similar to the Sanskrit word “dic” meaning to show or point out. Because we point with our fingers the term was applied to the fingers and then the toes. The term minimus is Latin for “least or smallest.” Its use in this instance is in reference to the fact that the muscle attaches to the smallest finger of the hand. Brevis is the Latin term meaning “short.” This is being used as a comparative reference to a longer muscle that does the same thing.

Origin

Convex surface of the hook of the hamate bone and the flexor retinaculum.

Insertion

Ulnar surface of the base of the proximal phalanx of the little finger.

Action

Flexion of little finger at the metacarpophalangeal joint and also produces lateral rotation of the finger.

Nerve supply

Ulnar nerve (C8 and T1)

Blood supply

The muscle is supplied by the ulnar artery via the deep palmar branch; muscular branches from the ulnar side of the superficial palmar arch; palmar digital artery on the ulnar side of the fifth metacarpal bone.

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