Patent ID: 8394098

Claim:
A fracture fixation plate system for use on a long bone having a metaphysis and a diaphysis, comprising: a) at least one end plate having a head portion for the metaphysis defining a plurality of fixation holes for receiving fixation elements that extend into the bone, a bone contacting first surface and an opposite second surface; b) at least one fragment plate having a first end and a second end with a plurality of bone screw holes therebetween, wherein said at least one end plate defines a socket that receives at least one end of said at least one fragment plate, a non-threaded oblong first hole in said second surface intersecting said socket, and a post formed within said socket and extending from a floor of the socket and away from said second surface and toward the bone on which said first surface is positioned, and said at least one end of said fragment plate has a threaded second hole and a third hole, said at least one end is dimensioned to fit into said socket with said threaded second hole being at least partially aligned with said non-threaded first hole of said end plate and said third hole is dimensioned to receive said post; and c) a set screw dimensioned to enter said non-threaded oblong first hole in said end plate and engage said threaded second hole in said fragment plate, wherein driving said set screw along its axis into said second hole causes longitudinal displacement of said end of said fragment plate relative to said end plate in a direction transverse to the axis of said set screw and results in forcing said post against a periphery of said third hole and rigidly locking the fragment plate into engagement with the end plate.