anconeus

The anconeus is a small muscle that stabilizes the elbow joint during movement.

Anconeus also abducts the ulna and stabilizes the elbow joint.

Some consider anconeus to be a continuation of the triceps brachii muscle.

This action is performed by triceps brachii with a negligible assistance from anconeus.

The muscles of this compartment are the triceps brachii and anconeus muscle.

In humans, the anconeus is sometimes loosely called "the fourth head of the triceps brachii."

It is also known as the "Subanconeus muscle", for its relationship to the Anconeus muscle.

The anconeus muscle can easily be palpated just lateral to the olecranon process of the ulna.

Parts of the common tendon radiates into the fascia of the forearm and can almost cover the anconeus muscle.

The other three are the triceps, anconeus, and extensor carpi radialis longus.

The anconeus muscles and triceps brachii muscles are involved isometrically in keeping the elbow straightened.

Anconeus is supplied by the middle collateral artery from the profunda brachii artery.

The triceps brachii and anconeus extend the elbow, and attach to the posterior side of the humerus.

Harm inflicted upon the radial nerve through these mechanisms can paralyze the anconeus muscle as well as other extensors of the elbow and wrist.

I flexed the joint still further until I was sure the anconeus was clear, then carefully rotated the radius and ulna inwards.

The anconeus muscle (or anconaeus/anconæus) is a small muscle on the posterior aspect of the elbow joint.

Anconeus is innervated by the radial nerve (cervical roots 7 and 8) from the posterior cord of the brachial plexus.

Anconeus: originates from the distal side of the caudalr humerus, inserts into the lateral side of the olecranon.

From the medial border a part of the Flexor carpi ulnaris arises; while to the lateral border the anconeus muscle is attached.

It ascends to the interval between the lateral epicondyle and olecranon, on or through the fibers of the supinator but beneath the anconeus.

The somatomotor portion of radial nerve innervating anconeus bifurcates from the main branch in the radial groove of the humerus.

Anconeus - Radial nerve (C6, C7,C8)

The brachioradialis is synergistic with the brachialis and biceps brachii; the triceps brachii and anconeus are antagonistic.

Also, brachioradialis, anconeus, triceps brachii, and extensor carpi radialis longus are all innervated by muscular branches of the radial nerve in the arm.

The elbow is innervated anteriorly by branches from the musculocutaneous, median, and radial nerve, and posteriorly from the ulnar nerve and the branch of the radial nerve to anconeus.