A 32-year-old male sustained a left femoral shaft fracture after a boating accident. He is treated with a retrograde femoral nail with an uncomplicated postoperative course. He presents 11-months postop with persistent thigh pain that is worse with weight-bearing. His current radiographs are demonstrated in figure A. His current ESR and C-reactive protein are 12 mm/hr (reference <20 mm/hr) and 0.9 mg/dL (reference <2.5 mg/dL). What is the best treatment option for this patient?