Sternum fixation device and method

A plate assembly for bone fracture immobilization comprising:

• a male plate, including
• a male main body, and
• a plurality of fasteners extending from the male main body;
• and
• a female plate, including
• a female main body,
• a plurality of wings extending from the female main body, and
• a plurality of apertures positioned on the plurality of wings,
• wherein each aperture of said plurality of apertures includes a fastener attachment with an opening for receiving a fastener of said plurality of fasteners of the male plate when an end of said fastener is inserted through said opening, and
• wherein said male plate and said female plate are configured to jointly a bone when joined together by inserting at least a portion of the plurality of fasteners into a like number of apertures of the plurality of apertures,
• wherein the male plate and the female plate are configured to fit around a human sternum by passing one or more fasteners of the plurality of fasteners of the male plate circumferentially around the sternum through the intercostal spaces and inserting an end of said one or more fasteners through a corresponding said fastener attachment opening.