Origin: Palmar 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 little finger and, occasionally, a slip to the ulnar side of the extensor apparatus of the little finger
Actions: Abduction of the fifth digit (little finger)
Innervation: Ulnar nerve (C8, T1)
Blood Supply: Palmar branch of ulnar artery
If you are looking for pain and symptoms information, please visit the Abductor digiti minimi pain page
Primary Actions of the Abductor Digiti Minimi
1. Abduction of the fifth digit at the metacarpophalangeal joint
Agonists:
- Extensor digitorum
Antagonists:
- Third dorsal interosseous
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References:
Clay, J. H., Allen, L., Pounds, D. (2015). Clay & Pounds' Basic Clinical Massage Therapy: Integrating Anatomy and Treatment (3rd ed.). Philadelphia, PA: Lippincott Williams & Wilkins
Netter, F. (2014). Atlas of Human Anatomy (6th ed.). Philadelphia, PA: Saunders.
Muscolino, J., (2016) Kinesiology: The Skeletal System and Muscle Function (3rd ed.). Maryland Heights, Missouri: Mosby.
Image Credits: Dreamstime
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