Extensor Carpi Radialis Brevis (ECRB)

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: Left Humerus (Anterior view)
Figure 2: Muscles that move the Forearm

Mucous sheaths of the dorsal hand1

Mucous sheaths of the dorsal hand

Transverse section of distal forearm1

Transverse section of distal forearm

Transverse cut of the Hand1

Transverse cut of the Hand
Reading list
  • Wrist Extensor and Brachioradialis Muscles
  • MMT

Origin

Lateral epicondyle of Humerus

Insertion

Base of 3rd metacarpal

Innervation

Posterior Interosseous N. (C7, C8)

Action

  • Elbow: Weak Flexion
  • Wrist: Extension, Radial deviation

Notes

1.
Gray H. Anatomy of the Human Body. 20th ed. (Lewis WH, ed.). Lea & Febiger; 1918. https://www.bartleby.com/107/
2.
Betts JG, Blaker W. Anatomy and Physiology. 2nd ed. OpenStax; 2022. https://openstax.org/details/books/anatomy-and-physiology-2e/?Book%20details
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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