Anconeus - Definition
It refers to a tiny muscle on the posterior aspect of the joint of the human elbow. It is also known by other names like:
It is supposed to belong to the lateral group of the Antebrachial muscle in the posterior compartment.
Anconeus - Etymology
The term "Ancon" is Old English in origin and means the "head of the elbow." The term "Anconeus" actually means "the muscle of the elbow" in English.
Anconeus - Location and Appearance
It can be found in the elbow of humans and is small, triangular in appearance.
Anconeus - Origin and Insertion
The muscle arises on the posterior lateral epicondyle surface of the humerus. It is inserted on the proximal shaft of the ulna to the lateral surface of the olecranon wherefrom it passes down on the dorsal side of the bone.
Anconeus - Innervation
It is innervated by the radial nerve (C7, C8 and T1). It is supplied blood by the middle collateral branch of the brachial profunda artery and the Interosseous recurrent branch of the posterior interosseous artery.
Anconeus - Function
It is primarily responsible for helping in extending the elbow and rotating the forearm. Due to its presence, the capsule of the elbow joint is not pinched by the ulna and the humerus duriung extension and release of arms. It stablizes the elbow joint.
It also connects the lateral side of the humerus to the central side of the ulna.
Anconeus - Disorders
Tennis elbow, an injurious condition of the Anconeus muscle, can cause pain and dificulties in bending the elbow or carrying weights with the affected arm.
Anconeus - Pictures
Check the location and appearance of this muscle in the human body from the images below.
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