There are two ways to determine the fracture of the metacarpal bone: 1, physical examination, if the metacarpal fracture, pain and swelling at the fracture with limited activity, severe pain in the metacarpal bone when pressed, serious fracture may be exposed or hand deformity, hand flexion and extension activities can not be completed and pain increased, can be initially judged to have a fracture of the metacarpal bone. If the fracture is small and concealed, CT or MRI may be required to determine the location of the fracture. If some fracture sites are small and hidden, CT or MRI of the hand may be required to clarify the location and extent of the fracture.