The full details of mechanism of injury and its relationship to anatomical site of vascular injury are shown in Table 1. None of the car occupants who sustained a vascular injury was wearing a seatbelt. Distribution of the anatomical sites of the vascular injuries is shown in Table 2. Upper limb

vascular injuries were the most common followed by the thoracic aorta. The calculated incidence of hospitalized vascular injured patients due to road traffic collisions in Al-Ain City was 1.87 cases/100 000 inhabitants find more per year. Table 1 Detailed description of mechanism of injury, vascular injuries, and associated injuries. Patients Status Details of mechanism of injury Vascular injury Associated injuries 1 Driver, No seatbelt Saloon car hits another saloon car, right front impact Femoral

artery Right renal artery Left femur, cervical spine, pelvic fracture, right kidney rupture 2 Driver, No seatbelt 4 wheel hits another 4 wheel, front impact and rollover Avulsion of axillary artery Avulsion of brachial plexus, fracture scapula 3 Driver, No seatbelt 4 wheel hits another 4 wheel, rear end impact Thrombosed left renal artery Pelvic, femur, and lumbar spine fractures, bilateral lung contusion 4 Front seat passenger No seat belt Saloon car hits a light post, left front impact Anterior tibial artery Skull fracture, subdural haematoma, right pneumothorax, liver laceration 5 Front seat passenger No seat belt Saloon car hits a 4 wheel, front Angiogenesis inhibitor impact Main hepatic veins Lacerated spleen, bilateral lung contusion 6 Front seat passenger No seat belt Saloon car rollover collision Right gluteal artery Pelvic and femur fractures, head injury, liver laceration 7 Back seat passenger No seat belt Saloon car rollover collision Brachial artery injury Supra-chondyler fracture of the right humerus 8 Back seat passenger No seat belt Saloon car hits a heavy truck, rear end impact Pelvic vessels Pelvic fracture 9 Pedestrian Hit by a saloon car Thoracic aorta dissection Bilateral haemothorax, bilateral rib fractures, tibia and LY294002 cell line fibula fractures 10 Pedestrian Hit by heavy truck Portal vein Brachial

artery Fracture humerus, liver laceration, bilateral rib fractures 11 Pedestrian Hit by a truck Rupture ever thoracic aorta Fracture pelvis, fracture tibia, head injury 12 Pedestrian Hit by a saloon car Rupture thoracic aorta Fracture pelvis, fracture clavicle 13 Motorcyclist No helmet Rollover Brachial artery Humeral fracture Table 2 Anatomical site of vascular injuries. Anatomical Site Number Brachial/axillary artery 4 Thoracic aorta 3 Pelvic vessels 2 Renal artery 2 Femoral artery 2 Portal vein 1 Hepatic veins 1 Anterior tibial artery 1 Total 16 In total, three patients sustained traumatic rupture of the thoracic aorta, one underwent open surgical repair and he died while the others had endovascular aortic stent graft. Both had successful outcome and survived.