Review Question - QID 1158

A 65-year-old female presents with the injury seen in Figures A and B after a motor vehicle collision. She is initially hemodynamically unstable and undergoes emergent pelvic supra-acetabular external fixation. Two days later, she is hemodynamically stable and cleared for surgery. She has no evidence of neurologic deficit on examination. Which of the following factors is a relative contraindication to open reduction and plating of her posterior pelvic injury from an anterior approach?