anconeus


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Related to anconeus: radial nerve, brachioradialis

an·co·ne·us mus·cle

[TA]
origin, back of lateral condyle of humerus; insertion, olecranon process and posterior surface of ulna; action, extends forearm and abducts ulna in pronation of wrist; nerve supply, radial.
Synonym(s): musculus anconeus [TA], anconeus

anconeus

[angkō′nē·əs]
Etymology: Gk, agkon, elbow
one of seven superficial muscles of the posterior forearm. A small triangular muscle, it originates on the dorsal surface of the lateral condyle of the humerus and inserts in the olecranon. It functions to extend the forearm and abduct the ulna in pronation.

anconeus

Musculus anconeus [NA6].

Action
Extends elbow and abducts ulna in pronation.
 
Nerve
Radial.

Origin
Posterior surface of the lateral epicondyle of humerus and adjacent capsule of elbow joint.
 
Insertion
Olecranon process and posterior surface of ulna.

Exercise
Tricep extension with a resistance band.

anconeus

(ang-kō′nē-ŭs) [L. fr. Gr. ankōn, elbow]
The short extensor muscle of the forearm, located on the back of the elbow. It arises from the back portion of the lateral epicondyle of the humerus, and its fibers insert on the side of the olecranon and upper fourth of the shaft of the ulna. It extends the forearm and stabilizes the ulna in pronation of the wrist.
References in periodicals archive ?
Anconeus epitrochlearis as a source of medial elbow pain in baseball pitchers.
A 42-year-old man demonstrated the presence of an olecranon spur as well as an anconeus epitrochlearis muscle on MRI scanning.
The presence of the anconeus epitrochlearis muscle is rarely implicated.
In the spiral groove the Radial nerve supplied the lateral and medial heads of the Triceps brachii and Anconeus and also gave lower lateral cutaneus nerve of arm and posterior cutaneus nerve of fore arm.
Most commonly compression has been attributed to the presence of an accessory muscle - the anconeus epitrochlearis.
An external surgical approach of the right elbow was performed, using a curved, 4-cm incision between the extensor carpi ulnaris and the anconeus muscles.
Most commonly, a posterior approach with an olecranon osteotomy has been used, but concerns about healing and symptomatic implants have led to more frequent use of a tricepsreflecting (Bryan-Morrey) or triceps-reflecting anconeus pedicle approach, as advocated by Bryan and Morrey and O'Driscoll, or a triceps-splitting approach, as advocated by McKee et al.
The triceps lies posteriorly along with the olecranon tip and the anconeus, which runs from the lateral epicondyle to the proximal ulna.
During the procedure, it is a viewing portal for 1) working in the posterior chamber where the entrance passes between the anconeus and the triceps and 2) the radiocapitellar joint, in which it passes through the anconeus.
The lateral collateral ligament complex provides static stability to varus stress, while the anconeus is thought to add some dynamic varus stability.
15) The Kocher interval is entered and the anconeus muscle is reflected, allowing identification of the crista supinatoris.
For management of patients with posttraumatic radiocapitellar or proximal radioulnar joint dysfunction, interpositional arthroplasties using the anconeus muscle have been proposed.