Seven patients who had low supracondylar fractures above total knee arthroplasties were treated using the intramedullary supracondylar rod. Six of the seven patients were steroid-dependent, long-standing severe polyarticular rheumatoid arthritics with marked osteopenia. The intramedullary supracondylar rod provided stable fixation that allowed early range of motion of the knee. Union occurred in good position in all patients; return to prefracture function was achieved in three months. The surgical procedure was reliable and was associated with minimal morbidity.