olecranon
Sign in to saveThe olecranon (, ), is a large, thick, curved bony process on the proximal, posterior end of the ulna. It forms the protruding part of the elbow and is opposite to the cubital fossa or elbow pit (trochlear notch). The olecranon serves as a lever for the extensor muscles that straighten the elbow joint.
Key facts
- Bone.Name
- Olecranon
- Bone.Latin
- olecranon
- Bone.Image
- File:Ulna - olecranon (anterior, lateral).jpg
- Bone.Caption
- Three ulnas; the olecranon is the protrusion at the top of each bone.
- Bone.Width
- 215
via Wikipedia infobox
Article
7 sectionsContents
- Structure
- Clinical significance
- Etymology
- Additional images
- See also
- References
- External links
The olecranon (, ), is a large, thick, curved bony process on the proximal, posterior end of the ulna. It forms the protruding part of the elbow and is opposite to the cubital fossa or elbow pit (trochlear notch). The olecranon serves as a lever for the extensor muscles that straighten the elbow joint.
==Structure== thumb|Olecranon (bottom left) in an elbow joint The olecranon is situated at the proximal end of the ulna, one of the two bones in the forearm. When the hand faces forward (supination) the olecranon faces towards the back (posteriorly).