Epitrochleoanconeus muscle
Epitrochleoanconeus muscle is a rare anatomical variant of the human body, found in the elbow region. It is not present in all individuals and its function is not entirely understood.
Etymology[edit]
The term "Epitrochleoanconeus" is derived from the Greek words "epi" (upon), "trochlea" (pulley), "ancon" (elbow), and "eus" (pertaining to). Thus, the term refers to a muscle that is located upon the pulley of the elbow.
Anatomy[edit]
The Epitrochleoanconeus muscle is located in the elbow region, specifically between the medial epicondyle of the humerus and the olecranon process of the ulna. It is a small, triangular muscle that is not present in all individuals.
Function[edit]
The exact function of the Epitrochleoanconeus muscle is not entirely understood. However, it is believed to assist in the stabilization of the elbow joint.
Clinical Significance[edit]
Due to its rarity, the Epitrochleoanconeus muscle is not often considered in clinical practice. However, it may be of interest in cases of unexplained elbow pain or instability.
Related Terms[edit]
- Humerus: The bone of the upper arm or forelimb, forming joints at the shoulder and the elbow.
- Ulna: The thinner and longer of the two bones in the human forearm, on the side opposite to the thumb.
- Medial Epicondyle: The bony prominence on the inner side of the elbow, to which the forearm muscles attach.
- Olecranon Process: The large bony prominence at the upper end of the ulna, at the elbow, that projects behind the elbow joint and forms the point of the elbow.
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Dissected elbow showing epitrochleoanconeus from Toldt 1919
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Illustration of epitrochleoanconeus muscle from Gruber 1866
