Olecranon fossa
Deep triangular depression on the posterior end of the humerus From Wikipedia, the free encyclopedia
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.
| Olecranon fossa | |
|---|---|
 Left humerus. Posterior view (olecranon fossa visible at bottom center) | |
Left humerus. Posterior view (olecranon fossa visible at bottom center) | |
| Details | |
| Identifiers | |
| Latin | fossa olecrani |
| TA98 | A02.4.04.024 |
| TA2 | 1204 |
| FMA | 23450 |
| Anatomical terms of bone | |
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
Elbow joint. Deep dissection. Posterior view.
Elbow joint. Deep dissection. Posterior view.
Elbow joint. Deep dissection. Posterior view.
References
External links
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