Isolated Ulnar Artery Injury: Indications for and Timing of Operative Intervention.

Background. Penetrating ulnar artery injury at the wrist is typically treated with immediate operative repair. This study reports a missed iatrogenic ulnar artery injury that resulted in the development of an ulnar artery pseudoaneurysm that was later managed with elective operative repair. The diagnosis and treatment of distal upper extremity pseudoaneurysms and the approach to suspected ulnar artery injury are discussed. Suspected isolated ulnar artery injuries without hard signs of bleeding can be managed with close follow-up and elective repair, should complications such as pseudoaneurysm occur.