Vertebral Plate Revision Apparatuses, Kits, and Methods and Osteosynthesis Systems

A vertebral plate revision apparatus, comprising:

• an extension plate having an extension plate upper surface, an extension plate lower surface, an extension plate side extending from the extension plate upper surface to the extension plate lower surface, a set of extension plate anchor passageways extending from the extension plate upper surface to the extension plate lower surface, a set of extension plate locking member passageways, each extension plate locking member passageway in communication with an extension plate anchor passageway of the set of extension plate anchor passageways and extending from the extension plate upper surface to the extension plate lower surface, an extension plate connecting member recess having an extension plate connecting member recess upper surface and an extension plate connecting member recess lower surface and defining a connecting member passageway extending from the extension plate connecting member recess upper surface to the extension plate connecting member recess lower surface;
• a connecting plate having a connecting plate upper surface, a connecting plate lower surface, a connecting plate side extending from the connecting plate upper surface to the connecting plate lower surface, a set of connecting plate anchor passageways extending from the connecting plate upper surface to the connecting plate lower surface, a set of connecting plate locking member passageways, each connecting plate locking member passageway in communication with a connecting plate anchor passageway of the set of connecting plate anchor passageways and extending from the connecting plate upper surface to the connecting plate lower surface, a connecting plate connecting member recess in the connecting plate upper surface and having a connecting plate connecting member recess surface, a connecting member boss disposed on and extending from the connecting plate connecting member recess surface, and an engaging recess defined by the connecting plate lower surface, the connecting member boss disposed through the connecting member passageway of the extension plate;
• and
• a connecting member having an upper surface, a lower surface, a side extending from the upper surface to the lower surface, and a channel extending from the upper surface to the lower surface, the connecting member releasably attached to the connecting member boss and in contact with the extension plate connecting member recess lower surface.