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.
The presence of the anconeus epitrochlearis muscle is rarely implicated.
Type 3: replacement of the retinaculum by the anconeus epitrochealaris muscle.
3) found that 60% of subjects had increased signal in the ulnar nerve on fluid-sensitive MR images, and 23% of patients had the presence of an anconeus epitrochlearis muscle.
MRI is well suited for demonstrating signal abnormality of the ulnar nerve in patients with cubital tunnel syndrome and also has the advantage of demonstrating causes such as osteophytes, soft-tissue masses, a thickened retinaculum and presence of an anconeus epitrochlearis muscle.
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 procedure releases the triceps off of the olecranon from medial to lateral, while leaving it in continuity with the olecranon periosteum and the forearm fascia, with the anconeus muscle acting as a pedicle.
For management of patients with posttraumatic radiocapitellar or proximal radioulnar joint dysfunction, interpositional arthroplasties using the anconeus muscle have been proposed.
Morrey BF, Schneeberger AG: Anconeus arthroplasty: a new technique for reconstruction of the radiocapitellar and/or proximal radioulnar joint.
Werner correlated elbow joint position and elbow kinetics with an EMG analysis of the biceps brachii, triceps brachii, and anconeus muscles in an investigation of seven healthy college and minor league pitchers using a 2 camera 500 frames per second analysis (Werner et al.