This MedLibrary.org supplementary page on Olecranon is provided directly from the open source Wikipedia as a service to our readers. Please see the note below on authorship of this content, as well as the Wikipedia usage guidelines. To search for other content from our encyclopedia supplement, please use the form below:
Related Sponsors
| Bone: Olecranon | |
|---|---|
 |
|
| Upper extremity of left ulna. Lateral aspect. | |
| Gray's | subject #52 214 |
| Dorlands / Elsevier |
o_02/12588741 |
The olecranon is a large, thick, curved eminence, situated at the upper and back part of the forearm.
It is bent forward at the summit so as to present a prominent lip which is received into the olecranon fossa of the humerus in extension of the forearm.
Its base is contracted where it joins the body and the narrowest part of the upper end of the ulna.
Its posterior surface, directed backward, is triangular, smooth, subcutaneous, and covered by a bursa.
Its superior surface is of quadrilateral form, marked behind by a rough impression for the insertion of the Triceps brachii; and in front, near the margin, by a slight transverse groove for the attachment of part of the posterior ligament of the elbow-joint.
Its anterior surface is smooth, concave, and forms the upper part of the semilunar notch.
Its borders present continuations of the groove on the margin of the superior surface; they serve for the attachment of ligaments, viz., the back part of the ulnar collateral ligament medially, and the posterior ligament laterally.
From the medial border a part of the Flexor carpi ulnaris arises; while to the lateral border the anconeus muscle is attached.
See also
Additional images
 Bones of left forearm. Anterior aspect. |
 Plan of ossification of the ulna. From three centers. |
 Left elbow-joint, showing anterior and ulnar collateral ligaments. |
 Capsule of elbow-joint (distended). Posterior aspect. |
 Posterior surface of the forearm. Deep muscles. |
 The Supinator. |
External links
- Olecranon at eMedicine Dictionary
- Norman/Georgetown radiographsul (xrayelbow)
- Roche Lexicon - illustrated navigator, at Elsevier 02240.008-1
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
 |
This musculoskeletal system article is a stub. You can help Wikipedia by expanding it. |
Wikipedia content modification information:
- This page was last modified on 18 May 2008, at 14:40.
Wikipedia Authorship and Review
Wikipedia content provided here is not reviewed directly by MedLibrary.org. Wikipedia content is authored by an open community of volunteers and is not produced by or in any way affiliated with MedLibrary.org.
Wikipedia Usage Guidelines
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article on "Olecranon".
The URL for this specific entry is:
All Wikipedia text is available under the terms of the GNU Free Documentation License. (See Copyrights for details). Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc.