Review Question - QID 214743

A 33-year-old man presents to the emergency department with severe left knee pain after getting tackled while playing rugby one hour ago. The pain has improved minimally since the initial event. The patient has no past medical history and does not take any medications. His temperature is 97.9°F (36.6°C), blood pressure is 133/84 mmHg, pulse is 100/min, respirations are 19/min, and oxygen saturation is 100% on room air. Physical exam is notable for a swollen and tender left knee. A radiograph is performed as seen in Figure A. Physical exam is notable for non-palpable left lower extremity pulses, a normal cardiopulmonary exam, normal sensation of the left lower extremity, and normal plantar flexion and extension. Which of the following is the most appropriate next step in management?