proximal ulna

English

Noun

proximal ulna (plural proximal ulnas)

  1. (anatomy) The upper end of the ulna bone, located at the elbow, forming the bony point (olecranon) and a large notch (trochlear notch) that fits with the upper arm bone (humerus) to create the stable hinge of the elbow joint, allowing arm bending and straightening.
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