Review Question - QID 108915

A 13-year-old boy presents to his primary care provider with joint pain in his right knee. He has experienced multiple episodes of pain and effusion in both knees throughout his life as well as easy bruising. Most of these episodes followed minor trauma. Both his uncle and grandfather have had similar problems. He denies any recent trauma and reports that his current pain is dull in nature. The patient is a long distance runner and jogs frequently. He is currently training for an upcoming track and field meet. His temperature is 98.6°F (37°C), blood pressure is 107/69 mmHg, pulse is 92/min, and respirations are 14/min. On physical exam, the joint is warm and swollen but does not have erythema or induration. The patient endorses pain on both passive and active range of motion but does not have pain with short arc range of motion. Which of the following is the treatment for the most likely cause of this patient's symptoms?