Flexor Pollicis Longus (FPL)

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: Muscles that move the Forearm

Mucous sheaths of the tendons of the wrist and digits2

Mucous sheaths of the tendons of the wrist and digits

Transverse section of distal forearm2

Transverse section of distal forearm

Transverse cut of the Hand2

Transverse cut of the Hand

Palmar muscles of the hand (left)2

Palmar muscles of the hand (left)
Reading list
  • Wrist and finger flexor Muscles
  • MMT

Origin

  • Anterior/proximal Radius
  • Adjacent IO membrane

Insertion

Distal phalanx of thumb (palmar surface)

Innervation

Anterior Interosseous N. (C8, T1)

Action

  • Wrist: Flexion, Radial deviation
  • CMC: Flexion
  • 1st MCP/IP: Flexion

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.
Weinstock D. NeuroKinetic Therapy: An Innovative Approach to Manual Muscle Testing. North Atlantic Books; 2010.
6.
Gilroy AM, MacPherson BR, Wikenheiser JC, Voll MM, Wesker K, Schünke M, eds. Atlas of Anatomy. 4th ed. Thieme; 2020.

Citation

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