Adductor Pollicis

Authors
Affiliations

Nathaniel Yomogida, B.S., SPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, B.S., SPT

Doctor of Physical Therapy

B.A. in Neuroscience

Muscle Origin Insertion Innervation Action
Adductor pollicis

Origin

  • Oblique head: Base of 2nd and 3rd metacarpal, Capitate1
  • Transverse head: Palmar surface of 3rd metacarpal1

Insertion

Medial base of 1st proximal phalanx (via ulnar sesamoid)1

Innervation

Deep Br. of Ulnar N. (C8, T1)1

Action

  • 1st CMC: Adduction1
  • 1st MCP: Flexion1

Notes

1.
Gilroy AM, MacPherson BR, Wikenheiser JC, Voll MM, Wesker K, Schünke M, eds. Atlas of Anatomy. 4th ed. Thieme; 2020.

Citation

For attribution, please cite this work as: