The difference between closed fracture and open fracture is the following: first, the difference of wound, closed fracture usually has no wound, even if there is a wound, the wound will not be connected with the fracture end, open fracture has a very obvious wound, and the wound bleeds more, the wound is connected with the fracture end. If it is serious, the fracture end can be seen directly on top of the wound. Second, closed fractures can usually be operated on electively, and surgery can be given within two weeks after the local swelling is stabilized. However, most open fractures are more severely injured, and emergency surgery is recommended if available. Third, closed fractures are rarely infected, but open fractures, because the wound is connected to the fracture end, bacteria can easily run into the fracture end, which can easily lead to soft tissue infection and even osteomyelitis.