Patients: One hundred forty-eight patients with 185 iliac vessel injuries. Outcome Measures: Survival and mortality, analyzed by univariate and logistic regression. Results: Admission mean ± SD systolic blood pressure was 81 ± 42 mm Hg, mean Revised Trauma Score was 6.0±2.8, and mean Injury Severity Score was 20.0±9.5. The mechanism of injury was penetrating in 140 patients (95%) and blunt in 8 (5%). The mean estimated blood loss was 6246 ± 6174 mL. Of the 185 injured vessels, 71 (99%) of 72 iliac arteries were repaired, 101 (89%) of 113 iliac veins were ligated, and 12 (11%) of 113 iliac veins were repaired. Overall survival was 51% (76/148). Mortality was 82% (49/72) in patients with exsan