The invention relates to an intramedullary linkage device for treatment of peri-prosthetic long bone fractures, system for long bone fracture treatment in the setting of pre-existing intramedullary implant using an intramedullary linkage device and intramedullary fracture fixation device, and methods of treating peri-prosthetic long bone fracture in the setting of pre-existing intramedullary implant using an intramedullary linkage device and intramedullary fracture fixation device.