Anconeus - Muscle Physiology & Functional Anatomy

 

Anconeus Muscle

Anatomy

 

Origin:

  • Lateral epicondyle of the humerus proximally (smooth surface at lower extremity of posterior aspect of lateral epicondyle)

Insertion

  • Lateral surface of the olecranon process (and the superior part of the posterior ulna distally)



Major Arteries:

  • Deep brachial artery

  • Recurrent interosseous artery

 

Neural Innervation:

  • Radial nerve (C7-C8)

 

Trigger Points: 

Anconeus Trigger Points

 

Physiology

 

Concentric Functions:

  • Extends the elbow (weak)

  • Abducts (moves) ulna in pronation

Eccentric Functions:

  • Helps stabilize the elbow joint

Isometric Function:

  • Helps stabilize the elbow joint


Related Muscles


Antagonist:

Exercises:

 

 


More Images of the Anconeus Muscle


More Information about the Anconeus Muscle

The anconeus muscle is a small muscle on the posterior aspect of the elbow joint.  While some consider the antonius to be a continuation of the triceps brachii, some consider it to be part of the posterior compartment of the arm or forearm.

In addition to being a weak extensor of the elbow the anconeus muscle prevents the elbow joint capsule being pinched in the olecranon fossa during extension of the elbow.

 

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