[Hypothenar hammer syndrome].

Hypothenar hammer syndrome is an infrequently diagnosed labor disease. We report a 51 years old male who used the medial aspect of his left hand as a hammer over the past 12 years. He presented with an ipsilateral ring finger embolization. An angiogram demonstrated an ulnar artery occlusion at the hypothenar eminence. No other source of emboli was found and treatment was conservative. This disease is a consequence of repetitive trauma on the ulnar artery, that leads to vessel wall changes and promotes local thrombosis, distal embolization and eventually, occlusion in situ. Treatment options are conservative in case of occlusion or reconstruction with exclusion of the emboligeneous area.