Muscles / Forearms
Opponens pollicis
- Forearms
- Hand
- Deep layer
Anatomy
- Origin
- Flexor retinaculum and tubercle of the trapezium
- Insertion
- Lateral side of the 1st metacarpal
- Nerve
- Recurrent branch of the median nerve (C8-T1)
Actions
- Opposes the thumb (flexes and medially rotates the 1st metacarpal)
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