Modular bone fixation plate assembly

A bone fixation plate assembly comprising:

• (a) a proximal plate assembly comprising:
• a proximal plate having a proximal body with a first proximal bone screw hole passing therethrough and first and second proximal arms projecting therefrom, each first and second proximal arm having an elongated expansion slot extending through a portion thereof and a threaded bore formed thereon so as to communicate with the corresponding expansion slot;
• and
• a first proximal set screw received within the threaded bore of the first proximal arm;
• a second proximal set screw received within the threaded bore of the second proximal arm;
• and
• (b) a distal plate assembly comprising:
• a distal plate having a distal body with a first distal bone screw hole passing therethrough and first and second distal sleeves projecting therefrom, the first distal sleeve bounding a first distal socket having the first proximal arm slidably received therein and the second distal sleeve bounding a second distal socket having the second proximal arm slidably received therein, the first and second distal sleeves being spaced apart from each other so that an openly exposed window is formed therebetween.

A bone fixation plate assembly comprising:

• (a) a proximal plate assembly comprising:
• a proximal plate having a proximal body with a first proximal bone screw hole passing therethrough and a first proximal arm projecting therefrom, the first proximal arm having an elongated expansion slot extending through a portion thereof and a threaded bore formed thereon so as to communicate with the expansion slot;
• and
• a first proximal set screw received within the threaded bore of the first proximal arm;
• (b) a distal plate assembly comprising:
• a distal plate having a distal body with a first distal bone screw hole passing therethrough and a first distal sleeve projecting therefrom, the first distal sleeve bounding a first distal socket;
• and
• (c) a central plate assembly comprising:
• a central plate having a central body with a first end and an opposing second end and with a first central bone screw hole passing therethrough, a first central sleeve projecting from the first end of the central body and a first central arm project from the second end of the central body, the first central arm having an elongated expansion slot extending through a portion thereof and a threaded bore formed thereon so as to communicate with the expansion slot, the first central sleeve bounding a first central socket;
• and
• a first central set screw received within the threaded bore of the first central arm;
• wherein the first proximal arm is slidably received within the first central socket and the first central arm is slidably received within the first distal socket.

A bone fixation plate assembly comprising:

• a bone plate having a top surface and an opposing bottom surface, a first bone screw hole extending through the bone plate from the top surface to the bottom surface;
• a first bone screw having a head with a threaded shaft projecting therefrom, the head of the first bone screw being received within the first bone screw hole;
• and
• a locking element having a locking plate with a top surface and an opposing bottom surface, a stem and a first projection outwardly extend from the bottom surface of the locking plate, the locking element being rotatably mounted to the bone plate so that the locking element can be rotated between a first orientation wherein the locking plate does not cover the head of the first bone screw and a second orientation wherein the locking plate covers at least a portion of the head of the bone screw, the first projection being resiliently pressed into the first bone screw hole when the locking element is in the second orientation.