3-Month mortality is three times higher in trauma patients with<unk> 
2 fractures will cause disruption of the<unk>  ring
Exception is in elderly (isolated pubic ramus) and athletes (isolated avulsion)
Extension of fracture into the rectum or vagina = open fracture
Exception is in elderly (isolated pubic ramus) and athletes (isolated avulsion)
Hemorrhage requiring transfusion (esp with SI joint disruption) (35%)
Intraabdominal injury (16%)
Bladder/urethra injury (6%)
Liver injury (6%)
Nerve deficits (15%)
Especially with post ring fracture, upper sacral fracture
Thoracic aorta rupture (1.5%)
Especially with post ring fracture, upper sacral fracture
Acetabular<unk> 
Open book<unk> Straddle<unk><unk>  avulsion fracture
Pelvic fractures
Diaphragmatic trauma
Acetabular pelvic fractures
Liver trauma
Knee fractures
Splenic trauma
Straddle pelvic fracture
Lumbar burst fracture