The steel plate will have several effects if not taken for life: Firstly, the steel plate can be influenced by the ions around the human body environment for a long time, and chemical electrolytic reaction can occur, which will release a large amount of metal ions into the body and cause chronic damage to the human body. Second, the steel plate is attached to the fracture site, there is a stress shield, the force transfer is not completely through the bone, part of the need to bypass the steel plate through, so the bone where the plate is located is prone to osteoporosis, bone strength is weakened, especially for the elderly prone to accidental fractures, and the elderly osteoporosis is serious, the plate screws are prone to loosen, fall off, can cause local foreign body reaction, such as pain, swelling, etc.. Third, the main component of the steel plate is iron, and the patient cannot undergo MRI because there is a strong magnetic field in MRI, which can easily adsorb the steel plate and cause danger.