A 29 year old male presents to your Emergency Department with finger pain. The patient reports his is a construction worker and was using and hammer and "missed" and hit his left hand. On physical exam you note some swelling to the distal half of the patient's left index finger. The patient has full range of moton and the MCP and PIP, however he cannot extend his finger at the DIP. The finger is held in flexion at rest at the DIP. There are no lacerations. You obtain an x-ray which is negative for acute fracture. What is the most appropriate management for this patient?