Opponens Pollicis

Authors

Affiliations

Nate 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

Figure 1: Intrinsic Muscles of the Hand¹

Muscles of the thumb²

Palmar muscles of the hand (left)²

Reading list

• Adductor pollicis and opponens pollicis Muscles³
• ⁴

Muscle	Origin	Insertion	Innervation	Action
Opponens pollicis	Trapezium	1st metacarpal (radial border)	Median n. C8 - T1	CMC: Opposition

Origin

Trapezium⁵

Insertion

1st metacarpal (lateral side)⁵

Innervation

Recurrent Br. of Median N. (C8, T1)⁵

Action

1st CMC: Opposition⁵

Notes

1.

Betts JG, Blaker W. Anatomy and Physiology. 2nd ed. OpenStax; 2022. https://openstax.org/details/books/anatomy-and-physiology-2e/?Book%20details

2.

Gray H. Anatomy of the Human Body. 20th ed. (Lewis WH, ed.). Lea & Febiger; 1918. https://www.bartleby.com/107/

3.

Donnelly JM, Simons DG, eds. Travell, Simons & Simons’ Myofascial Pain and Dysfunction: The Trigger Point Manual. Third edition. Wolters Kluwer Health; 2019.

4.

Neumann DA, Kelly ER, Kiefer CL, Martens K, Grosz CM. Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation. 3rd ed. Elsevier; 2017.

5.

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