A 13-year-old male sustains the injury shown in Figure A. He is admitted at 10 pm with plans for surgical treatment in the morning. Overnight, he requires an increase in narcotics to control his pain. On physical examination, he has diffuse tenderness to palpation and is unable to comply with the examination. He appears distressed and his leg appears more swollen than when he was admitted. What is the next best step in management?