Muscles / Forearms
Palmar interossei
- Forearms
- Hand
- Deep layer
Anatomy
- Origin
- Palmar surfaces of the 2nd, 4th and 5th metacarpals
- Insertion
- Bases of the proximal phalanges and extensor expansions of digits 2, 4 and 5
- Nerve
- Deep branch of the ulnar nerve (C8-T1)
Actions
- Adduct digits 2, 4 and 5 toward the axial line ("PAD")
- Assist MCP flexion and IP extension
References (4)
- Standring S, ed. Elsevier. Gray's Anatomy: The Anatomical Basis of Clinical Practice. 42nd ed.
- Dalley AF, Agur AMR. Wolters Kluwer. Moore's Clinically Oriented Anatomy. 9th ed.
- Neumann DA. Elsevier. Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation. 3rd ed.
- Betts JG, Young KA, Wise JA, et al. OpenStax (free, openly licensed textbook). Anatomy and Physiology 2e