Delayed Radial Nerve Injury from a Brachial Artery Pseudoaneurysm Following a Four-Part Proximal Humerus Fracture: A Case Report and Literature Review.

Brachial artery pseudoaneurysms can occur following humeral fractures. Fractures at this location can lead to the unique complication of a proximal pseudoaneurysm that compresses the radial nerve. It should be considered a possible limb-threatening complication in fractures managed conservatively as well as surgical candidates.