1. Ninety-one cases of arterial injury are reviewed. 2. Good results are shown to attend early restoration of arterial flow. 3. Early diagnosis or exploration is essential and the time between injury and repair is decisive. 4. Diagnosis is nearly always possible on clinical signs; assume injury is present till proven absent. 5. Persistent ‘arterial spasm’ is an indication to explore the lumen of the artery, when most cases will be found to have an organic obstruction of the vessel. 6. Perform the simplest repair possible but for more extensive defects, autogenous saphenous vein grafts are entirely satisfactory.