A method for reinforcing a sternum after a sternotomy or a sternal fracture. The method includes i) applying a plurality of elongated members along at least one longitudinal lateral edge of the sternum, wherein the elongated members are each provided with a first connection part and a second connection part； ii) slidably joining a first connection part of a first elongated member with a second connection part of an adjacent preceding elongated member along the longitudinal lateral edge of the sternum； iii) slidably joining a second connection part of the first elongated member with a first connection part of an adjacent following elongated member along the same longitudinal lateral edge of the sternum； iv) fitting a projecting portion of one or more of said elongated members in an intercostal space adjacent to the longitudinal lateral edge of the sternum； and v) fixing the elongated members to the sternum.
