Muscles / Forearms
Extensor carpi radialis brevis
- Forearms
- Forearm & wrist
- Superficial layer
Also called ECRB.
Anatomy
- Origin
- Lateral epicondyle of the humerus (common extensor origin)
- Insertion
- Dorsal base of the 3rd metacarpal
- Nerve
- Deep branch of the radial nerve (C7-C8)
Actions
- Extends and abducts the wrist
- Stabilises the wrist during gripping
Exercises that train it most
Notes
- The tendon most often affected in lateral elbow tendinopathy ("tennis elbow").
References (6)
- Coombes BK, Bisset L, Vicenzino B. J Orthop Sports Phys Ther. 2015;45(11):938-949. Management of lateral elbow tendinopathy: one size does not fit all
- Tyler TF, Thomas GC, Nicholas SJ, McHugh MP. J Shoulder Elbow Surg. 2010;19(6):917-922. Addition of isolated wrist extensor eccentric exercise to standard treatment for chronic lateral epicondylosis: a prospective randomized trial
- 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