Extensor Carpi Radialis Longus - Muscle Physiology & Functional Anatomy

 

Extensor Carpi Radialis Longus Muscle

Anatomy

 

Origin:

  • Lower third of lateral supracondylar ridge of humerus & lateral intermuscular septum

Insertion

  • Posterior base of 2nd metacarpal



Major Artery:

  • Radial artery

 

Neural Innervation:

  • Radial nerve (C6-C7)

 

Trigger Points: 

Trigger points for the extensor carpi radialis longus

 

Physiology

 

Concentric Functions:

  • Extends & abducts the hand at the wrist

Eccentric Functions:


Isometric Function:


Related Muscles


Antagonist:

Exercises:

 

 


More Images of the Extensor Carpi Radialis Longus Muscle

How to Palpate the Extensor Carpi Radialis Longus

Extensor Carpi Radialis Longus


More Information about the Extensor Carpi Radialis Longus Muscle

While the extensor carpi radialis longus muscle is innervated by a deep branch of the radial nerve all other forearm extensor muscles in the superficial layer of the posterior compartment are innervated by the posterior interosseous branch of the radial nerve.

 

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