Between 1990 and 1995, 22 comminuted supracondylar and intercondylar femoral fractures in 22 patients were treated with the AO dynamic condylar screw(DCS). Minimum twelve months of clinical and radiographic follow-up evaluation were available on all patients. All cases achieved clinical and radiographic bony union. Functional results were graded using a Schatzker and Lambert's criteria. Results were seen to be excellent to good to fair in 100% of A2 cases, 86% of C2 cases, 75% of A3 cases and 67% of C3 cases. The more comminuted fractures were found to have worse clinical results and more radiographic malunion. The ability to obtain good fixation in osteoporotic bone is distinct advantage of the DCS. The results of DCS fixation compare favorably with previous studies using other fixation devices in comminuted supracondylar and intercondylar femoral fractures