Review Question - QID 210634

A 54-year-old man presents to his primary care physician for back pain. His back pain worsens with standing for a prolonged period of time or climbing down the stairs and improves with sitting. It is now preventing him from working at his job as a machinist. Medical history is significant for hypertension, type 2 diabetes mellitus, and hypercholesterolemia. His temperature is 98.7°F (37°C), blood pressure is 137/88 mmHg, pulse is 80/min, respirations are 12/min, and oxygen saturation is 99% on room air. Neurologic exam demonstrates normal tone, 5/5 strength, and a normal sensory exam throughout the bilateral lower extremity. Skin exam is unremarkable and dorsalis pedis and posterior tibialis pulses are 3+. Which of the following is the most appropriate next step in management?