Pelvic fractures Quiz: Ace Your Exams

A 37-year-old woman presents to the emergency department after being involved in a high-speed motor vehicle collision. The patient, who was the restrained driver, was traveling at a speed of approximately 60 mph when she unexpectedly lost control of the vehicle and hit the median. She has no chest pain but complains of severe pelvic pain. The patient's Glasgow Coma Scale is 15. Airway and breathing are intact and stable, and there is no evidence of facial injuries, neck or spinal fractures, bruising, or tenderness over the chest. Temperature is 37°C (98.6°F), blood pressure is 177/85 mm Hg, heart rate is 119/min, respiratory rate is 18/min, and oxygen saturation is 96% on room air. Physical examination demonstrates bruising over the iliac crests with crepitus and laxity. Neurologic examination is within normal limits. Examination of the lower extremities reveals a shortened left lower extremity compared with the right. Pulses are 2+ and symmetric in the lower extremities. Point of care abdominal ultrasound shows no evidence of intra-abdominal fluid. A pelvic X-ray demonstrates a pelvic ring fracture. Which of the following additional clinical assessments should be performed next?