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Olecranon
| Olecranon | |
|---|---|
 Posterior end of the ulna, with the olecranon labelled at top. | |
| Details | |
| Identifiers | |
| Latin | olecranon |
| MeSH | D056740 |
| TA98 | A02.4.06.002 |
| TA2 | 1231 |
| FMA | 39795 |
| Anatomical terms of bone | |
The olecranon (/oʊˈlɛkrənɒn/, from Greek olene 'elbow' and kranon 'head'), 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.
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