An interlocking intramedullary rod assembly for treating a fracture, the assembly including an intramedullary rod having a distal section and a proximal section a distal interlocking screw and a proximal interlocking screw wherein the distal section comprises a static distal seat for receiving the distal interlocking screw, and the proximal section comprises a dynamic proximal seat for receiving the proximal interlocking screw and further wherein the static distal seat is configured to secure the distal interlocking screw to the intramedullary rod such that the distal interlocking screw cannot move relative to the intramedullary rod, and the dynamic proximal seat is configured to secure the proximal interlocking screw to the interlocking rod such that a first end of the proximal interlocking screw cannot move relative to the intramedullary rod and the second end of the proximal interlocking screw can move relative to the intramedullary rod.
