22:10 General Surgery Orthopaedics Emergency Medicine Radiology Preoperative ProceduresAnkle-Brachial Index, CT Angiography, and Proximal Tibial Traction for Gunshot Femoral FractureJohnathan R. Kent, MD, James Jeffries, MD, Andrew Straszewski, MD, Kenneth L. Wilson, MD, FACSUChicago Medicine