A blurred fracture line is not a direct indication of what percentage of recovery has occurred, only that growth has begun at the fracture site and the original bone scab has formed. When the fracture appears, it will be manifested as a clear fracture line. In the process of fracture recovery, the hematoma at the fracture site gradually disappears, and local mechanization will occur to make the bone scab gradually form, and at this time, when the imaging examination is performed, the fracture line will appear blurred. After that, the fracture line will become more and more blurred until the fracture line disappears and the real bone scab is formed, which indicates that the fracture has healed. When blurring of the fracture line occurs, it is necessary to consult a doctor to clarify whether the fracture healing is normal or not, and to take the next step of intervention under the doctor’s guidance to promote the fracture to return to the normal state as soon as possible.