1.If the whole process of recovery is smooth, it is generally recommended to place 2-3 years, more than two years are not too big a problem. 2, if the recovery process of steel plate rejection, incision infection and other problems, try to change the medicine or incision clearance, etc., dragged to about a year to take out. 3.If the steel plate rejection is serious, secretion, chest infection may be, or incision infection is heavy, no improvement in the change of medication, depending on the situation at any time to take out. 4.If the chest X-ray suggests that there is a possibility of plate flip and displacement, it is also necessary to take it out at any time according to the situation.