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Lateral epicondyle of humerus
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:watermark(/images/watermark_only_413.png,0,0,0):watermark(/images/logo_url_sm.png,-10,-10,0):format(jpeg)/images/anatomy_term/epicondylus-lateralis-humeri/F3CaamffNyycaQHMdKxBA_epicondylus-lateralis-humeri_magni.png "Lateral epicondyle of humerus (Epicondylus lateralis humeri); Image: Yousun Koh"){kind=logo}
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The lateral epicondyle of the humerus is a bony eminence located at the distal end of the humerus, being the lateral component of the non-articular part of the lateral condyle of the humerus. It is a palpable bony landmark, but is less prominent than the medial epicondyle of the humerus.
The lateral epicondyle serves as an attachment point for the radial collateral ligament and several muscles of the forearm including: extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, extensor carpi ulnaris, supinator and anconeus. Anterior to the tip of the epicondyle, the radial nerve branches into the posterior interosseous and superficial radial nerves.
Epicondylitis of the lateral epicondyle, commonly known as "tennis elbow", commonly occurs with overuse of the extensor muscles of the forearm originating from the lateral epicondyle.
| Terminology |
English: Lateral epicondyle of humerus Latin: Epicondylus lateralis humeri |
| Definition | Bony eminence on the lateral aspect of the distal end of the humerus |
| Function | Attachment point for the radial collateral ligament and extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, extensor carpi ulnaris, supinator and anconeus muscle |
Learn more about the features of the humerus with this study unit (and article):
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