Muscle
Opponens digiti minimi
Hypothenar - cups the palm
High-yield
Rotates the 5th metacarpal to cup the palm; ulnar nerve.
Overview
A hypothenar muscle that rotates the 5th metacarpal to deepen the palm during opposition. Deep ulnar branch.
Reference facts
- Origin
- Hook of the hamate and flexor retinaculum
- Insertion
- Medial border of the 5th metacarpal
- Action
- Draws the 5th metacarpal forward and rotates it, deepening the palm
- Innervation
- Deep branch of the ulnar nerve (C8, T1)
- Blood supply
- Deep palmar arch
Frequently asked questions
What does the opponens digiti minimi do?
The opponens digiti minimi draws the 5th metacarpal forward and rotates it, deepening the palm.
What nerve innervates the opponens digiti minimi?
The opponens digiti minimi is innervated by the deep branch of the ulnar nerve (C8, T1).
Where does the opponens digiti minimi attach?
The opponens digiti minimi originates from the hook of the hamate and flexor retinaculum and inserts on the medial border of the 5th metacarpal.
What is the blood supply of the opponens digiti minimi?
The opponens digiti minimi is supplied by the deep palmar arch.