Anconeus

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ΕΤΥΜΟΛΟΓΙΑ

Latin, of the elbow

Anconeus is a small muscle that acts weakly in extension and pronation of the forearm.

Contents

Shape

Anconeus
Anconeus.GIF
System: Muscle
Function: Extension of elbow, ulnar movement in pronation
Origin: Posterior aspect of lateral epicondyle of humerus
Branches:
Insertion: Lateral side of olecranon of ulna
Arterial supply:
Venous drainage:
Lymphatic drainage:
Innervation: Radial nerve (C7, C8)
Vertebral levels:
Search for Anconeus in Gray's.

Anconeus is a small triangular muscle on the posterior aspect of the elbow. Its fibres diverge from the tendon of origin to a relatively larger insertion.

Anconeus may represent an extension of triceps, although there is no direct connection between the two tendons.

Actions

Joints Affected

Origin

  • A smooth area of the posterior surface of the lateral epicondyle of the humerus

Insertion

  • Lateral side of the olecranon of the ulna
  • Upper quarter of the posterior surface of the ulna

Nerve Supply