Olecranon fossa
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The olecranon fossa is a deep triangular depression on the posterior side of the humerus, superior to the trochlea. It provides space for the olecranon of the ulna during extension of the forearm.
Structure
The olecranon fossa is located on the posterior side of the distal humerus.[1][2]
The joint capsule of the elbow attaches to the humerus just proximal to the olecranon fossa.[3][4]
Function
The olecranon fossa provides space for the olecranon of the ulna during extension of the forearm, from which it gets its name.[2][5]
Other animals
The olecranon fossa is present in various mammals, including dogs.[6]
Additional images
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Elbow joint. Deep dissection. Posterior view.
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Elbow joint. Deep dissection. Posterior view.
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Elbow joint. Deep dissection. Posterior view.
References
Public domain This article incorporates text in the public domain from Template:Wikidatathe 20th edition of Gray's Anatomy (1918) Template:Main other
External links
- Template:BiowebUW
- Photo of model at Waynesburg College skeleton3/olecranonfossa
- radiographsul at The Anatomy Lesson by Wesley Norman (Georgetown University) (Template:NormanAnatomyFig)
- Imaging at umich.edu
Template:Bones of upper extremity Template:Portal bar Template:Authority control