
Abductor Digiti Minimi Hand
Origin: Volar surface of the pisiform, the tendon of flexor carpi ulnaris, and the pisohamate ligament
Insertion: Medial aspect of the base of the proximal phalanx of the fifth digit and, occasionally, a slip to the ulnar side of the extensor apparatus of the fifth digit
Actions: Abduction of the fifth digit
Innervation: Ulnar nerve (C8, T1)
Blood Supply: Deep palmar branches of the radial artery
Primary Actions of the Abductor Digiti Minimi Hand Muscle
1. Abduction of the fifth digit at the metacarpophalangeal joint
Agonists:
- Extensor digitorum
Antagonists:
- Third dorsal interosseous
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Information about cause and effect pain: Abductor Digiti Minimi Pain and Symptoms