The arm fracture is still painful after two months, consider the fracture has displacement, osteomyelitis, soft tissue adhesion and other reasons. 1. Displaced fracture: arm fracture pain in two months, if the activity of the pain, consider the fracture has displacement, need to take X-ray to see displacement, displacement of small manipulation reset, plaster fixation, if the review of the displacement of large surgical incision reset internal fixation. 2. Osteomyelitis: mostly caused by bacterial infection, localized redness, swelling and fever, pain is obvious. The radiographs and blood tests, C-reactive protein can be clear. 3. Soft tissue adhesion: due to fracture braking caused by local soft tissue adhesion, mainly for local pain, stiffness, activity limitation, if the fracture healing can be rehabilitation exercise. Therefore, the arm fracture two months still hurts to clarify the cause of treatment.