Of 465 patients with SPFs, 74 were excluded (64 patients did not have a pelvic CT scan; 6 patients were transfused for chronic diseases; and 4 patients with unstable pelvic fractures died before receiving their intended operation). Finally, 391 patients formed the study population and were included in the analysis. There were 280 patients (72%) in group A, 90 (23%) in group B, and 21 (5%) in group C (Figure 1). A total of 310 patients (79%) had a Tile type A fracture and 20 (5%) had a Tile type B. Also, 61 patients (16%) had an isolated acetabular fracture. By definition, there were no type C fractures. Six patients (29%) in group C underwent angiography, and 5 (24%) proceeded to embolization. The mean (SD) hospital stay for the entire population was 8.6 (8.6) days, and 16 patients died (4%). In 3 patients, the pelvic bleeding was the cause of, or a significant contributor to, their death. An 83-year-old patient with SPFs, lower-extremity fractures, and upper-extremity degloving injuries died 24 hours after receiving multiple blood transfusions. A 91-year-old patient with SPFs and a humerus fracture underwent angiography, but no extravasation was found, and she did not undergo embolization. On posttrauma day 8, she died of multiorgan failure related to the initial bleeding. Finally, a 75-year-old multitrauma patient (SPFs, head injury, and lower- and upper-extremity fractures) underwent massive resuscitation and bilateral internal iliac embolization twice. He developed abdominal compartment syndromes, requiring decompression. Despite successful control of the bleeding, he died on posttrauma day 10 for the same reasons as those of the previous patient.