Opponens Digiti MinimiThe structure indicated is the opponens digiti minimi muscle. The opponens digiti minimi muscle is one of the intrinsic muscles of the hand that belongs to the hypothenar group. The hypothenar group of intrinsic hand muscles consist of three muscles:
- Abductor digiti minimi
- Opponens digiti minimi
- Flexor digit minimi brevis
Origin: Hook of hamate and flexor retinaculum
Insertion: Medial border of 5th metacarpal
Innervation: Deep branch of ulnar nerve
Action: Laterally rotates and anteriorly draws 5th metacarpal to opposition with thumbLearn all about the anatomy of the muscles of the hand in this tutorial.