title: Hand-arm vibration syndrome with proximal ulnar artery occlusion.
abstract: The case of a man exposed during 25 years to vibration while maneuvering a heavy earth moving tractor is reported. The first clinical manifestation of hand-arm vibration syndrome was a bilateral Raynaud's phenomenon followed five years later by digital necrosis. The arteriography revealed a proximal and bilateral ulnar artery occlusion. Bilateral median nerve conduction abnormalities were also present. Vibration exposure level was much higher than the threshold level proposed by the European Commission. Laboratory examinations for vasculitis and other vascular diseases were all negative. The purpose of this report is to show that vibration can be responsible for proximal occlusion of a medium sized artery and severe neurovascular abnormalities which must be distinguished from the usual vasospastic Raynaud's phenomenon and the classical hypothenar hammer syndrome. An early and correct diagnosis is crucial because continued repetitive trauma can result in irreversible ischemic injury and loss of digits.
authors.affiliation: Division of Hypertension and Vascular Medicine, Centre Hosptitalier Universitaire Vaudois, Lausanne, Switzerland.
authors.forename: B
authors.initials: B
authors.lastname: Noël
authors.forename: J
authors.initials: J
authors.lastname: Holtz
authors.forename: H
authors.initials: H
authors.lastname: Savolainen
authors.forename: M
authors.initials: M
authors.lastname: Depairon
mesh_terms: D000792:Angiography; D001132:Arm / Q000098:blood supply*; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging*; D006225:Hand / Q000098:blood supply*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009336:Necrosis; D009784:Occupational Diseases / Q000000981:diagnostic imaging*; D011928:Raynaud Disease / Q000000981:diagnostic imaging*; D012307:Risk Factors; D017535:Ulnar Artery / Q000000981:diagnostic imaging*; D014732:Vibration / Q000009:adverse effects*