Anconeus origin and insertion

Anconeus runs from the humerus to the ulna.

What are the origin and insertion of anconeus?

Anconeus arises from the back of the lateral epicondyle of the humerus. It inserts on the side of the olecranon and the top of the back of the ulna. Its main action is elbow extension. It is supplied by the radial nerve (C7, C8). The attachments, actions and nerve follow Gray (1918).

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Every attachment and its bone

Origin 1

Origin of anconeus, with the bone each is on
Attachment	Bone
Back of the lateral epicondyle of the humerus	Humerus

Insertion 1

Insertion of anconeus, with the bone each is on
Attachment	Bone
Side of the olecranon and the top of the back of the ulna	Ulna

Actions

The actions of anconeus, and which are its main ones
Action	What moves	Main or assisting
Elbow extension	The forearm straightens	Main action

Each action is stated in the anatomical position: standing, arms by the sides, palms forward.

Innervation

The radial nerve (C7, C8).

Sources

Gray (1918), Myology, the muscles and fasciae of the forearm

See it in 3D

Visualiser · Biology Muscle Origin, Insertion and Action Explorer Paint a muscle’s origin and insertion on real 3D bones, or click a bone to see what attaches to it. Visualiser · Biology Upper Limb Muscles Explorer 114 upper limb muscle meshes, by compartment.