[Hypothenar aneurysm of the ulnar artery. Apropos of a case treated by excision and anastomosis].

A case of aneurysm of the ulnar artery, located in the region of the hypothenar eminence is reported. This true traumatic aneurysm had a reconstructive treatment, considering the arterial anatomy of the patient's hand. A resection followed by an end to end anastomosis has been done with a good post-operative result at two years and a half. The unusualness of this pathology, the predominance of its traumatic and occupational etiology are emphasized. True and false traumatic aneurysms are described. The diagnosis of aneurysm is primarily clinical. Arteriography is interesting in the preoperative check-up. Reconstructive surgery is now preferred.