Ulnar Artery Thrombosis: Hypothenar Hammer Syndrome

摘要

A 49-year-old male construction worker, left-hand dominant, presented with a 1.5-week history of pain, cold intolerance, and ischemia of the left long, ring, and small fingers. The digits were numb, cool, cyanotic, and had delayed capillary refill. During Allen testing, there was poor perfii-sion of the entire hand with compression of the radial artery.Arteriography revealed abrupt occlusion of the distal ulnar artery (A, solid arrow). Some of the superficial palmar arch appeared to be preserved solely by circulation through the radial artery. Occlusions were noted within the digital arteries to the long, ring, and small fingers (A, hollow arrows), most likely representing em-boli originating from the thrombosed ulnar artery.