Muscle
Flexor digiti minimi brevis (hand)
Bends the little finger at its knuckle
High-yield
Its main movement is fifth-finger MCP flexion, under control of the deep ulnar nerve branch.
Overview
This short hypothenar muscle connects the hamate region to the base of the little finger. Its pull flexes the fifth metacarpophalangeal joint.
Reference facts
- Origin
- Hamate hook and adjacent flexor retinaculum
- Insertion
- Ulnar side of the fifth proximal phalanx at its base
- Action
- Bends the fifth finger at the MCP joint
- Innervation
- Deep ulnar nerve branch, mainly C8–T1
- Blood supply
- Muscular branches of the ulnar artery
Frequently asked questions
What does the flexor digiti minimi brevis (hand) do?
The flexor digiti minimi brevis (hand) bends the fifth finger at the MCP joint.
What nerve innervates the flexor digiti minimi brevis (hand)?
Deep ulnar nerve branch, mainly C8–T1.
Where does the flexor digiti minimi brevis (hand) attach?
The flexor digiti minimi brevis (hand) originates from the hamate hook and adjacent flexor retinaculum and inserts on the ulnar side of the fifth proximal phalanx at its base.
What is the blood supply of the flexor digiti minimi brevis (hand)?
The flexor digiti minimi brevis (hand) is supplied by the muscular branches of the ulnar artery.