VERTEBRAL CONNECTING PLATE

摘要

A vertebral connecting plate assembly includes a vertebral connecting plate which is provided, on its opposite ends, with vertebra connecting portions to be connected to associated vertebral members or bodies. The vertebra connecting portions have threaded holes, and the set screws of the present invention have engaging screw portion, which are engaged in the associated threaded holes of the vertebral connecting plate. Thrusting screw portions of the set screws, which are thrust in the vertebral members or bodies, have a pitch (P1) larger than the pitch (P2) of the engaging screw portions.