Rounded eminence on the medial side of the humerus
Medial epicondyle of the humerus
Left elbow-joint, showing anterior and ulnar collateral ligaments. (Medial epicondyle labeled at center top.)
Plan of ossification of the humerus. (Medial epicondyle labeled at lower left.)
Details
Identifiers
Latin
epicondylus medialis humeri
TA98
A02.4.04.027
TA2
1207
FMA
23441
Anatomical terms of bone
[edit on Wikidata]
The medial epicondyle of the humerus is an epicondyle of the humerus bone of the upper arm in humans. It is larger and more prominent than the lateral epicondyle and is directed slightly more posteriorly in the anatomical position. In birds, where the arm is somewhat rotated compared to other tetrapods, it is called the ventral epicondyle of the humerus. In comparative anatomy, the more neutral term entepicondyle is used.
The medial epicondyle gives attachment to the ulnar collateral ligament of elbow joint, to the pronator teres, and to a common tendon of origin (the common flexor tendon) of some of the flexor muscles of the forearm: the flexor carpi radialis, the flexor carpi ulnaris, the flexor digitorum superficialis, and the palmaris longus. The medial epicondyle is located on the distal end of the humerus. Additionally, the medial epicondyle is inferior to the medial supracondylar ridge. It is also proximal to the olecranon fossa.
The medial epicondyle protects the ulnar nerve, which runs in a groove on the back of this epicondyle. The ulnar nerve is vulnerable because it passes close to the surface along the back of the bone. Striking the medial epicondyle causes a tingling sensation in the ulnar nerve. This response is known as striking the "funny bone".[1] The name funny bone could be from a play on the words humorous and humerus, the bone on which the medial epicondyle is located,[2] although according to the Oxford English Dictionary, it may refer to "the peculiar sensation experienced when it is struck".[3] Medial epicondyle fracture of the humerus are common when falling onto an outstretched hand.
^Saladin, Kenneth S. (2012). Anatomy & Physiology: The Unity of Form and Function. McGraw-Hill Publishing Co. ISBN 978-0071316385.
^Hendrickson, Robert A. (2004). The Facts on File Encyclopedia of Word and Phrase Origins (Facts on File Writer's Library). New York: Checkmark Books. p. 281. ISBN 0-8160-5992-6.
^"Welcome to the new OED Online : Oxford English Dictionary". Dictionary.oed.com. Retrieved 2012-03-20.
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striking themedialepicondyleofthehumerus posteriorly, or inferiorly with the elbow flexed. The ulnar nerve is trapped between the bone and the overlying...
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An epicondyle (/ɛpɪˈkɒndaɪl/) is a rounded eminence on a bone that lies upon a condyle (epi-, "upon" + condyle, from a root meaning "knuckle" or "rounded...
the front part ofthemedialepicondyleofthehumerus; and, below, by its broad base to themedial margin ofthe coronoid process ofthe ulna. The posterior...
epicondyle. Themedial supracondylar crest forms the sharp medial border ofthe distal humerus continuing superiorly from themedialepicondyle. The lateral...
humerus fracture is a fracture ofthe distal humerus just above the elbow joint. The fracture is usually transverse or oblique and above themedial and...
the radial nerve. Caudal and medial muscles of forearm: Pronator teres: originates on themedialepicondyleofthehumerus and inserts on themedial border...
contracts, thus causing it to move over the medialepicondyleofthehumerus. As a result, this causes irritation to the already existing injury. Some treatments...
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the humerus. This prevents hyperextension and forms a hinge joint with the trochlea ofthehumerus. There is also a radial notch for the head ofthe radius...
widest in the middle, and narrowest at the proximal and distal attachments. It arises mainly from themedialepicondyleofthehumerus via the common flexor...
the medial supracondylar ridge immediately superior to themedialepicondyleofthehumerus, and from the common flexor tendon (which arises from the medial...
themedialepicondyleofthehumerus, medial to the basilic vein, they drain the C7 and C8 dermatomes. Deltoideopectoral nodes: Situated between the pectoralis...
the medialepicondyleofthehumerus, laterally by the olecranon process ofthe ulna and the tendinous arch joining the humeral and ulnar heads ofthe flexor...
occupies the anterior, lower, and posterior parts ofthe extremity. The trochlea has the capitulum located on its lateral side and themedialepicondyle on...
in the same plane as the median nerve, between the biceps and triceps muscles. At the elbow, this nerve travels posterior to themedialepicondyleof the...
contribution from the muscles arising from themedialepicondyleofthehumerus. Extension in the humeroulnar joint is produced by the triceps brachii and...
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