Background & Objectives: Severely comminuted distal femur fractures are in association with the high complications and their treatment is so difficult. Supracondylar femur fractures usually occur as a result of low-energy trauma in osteoporotic bone in elderly persons or high-energy trauma in young patients. This study was aimed to assess the results of new treatment plan for comminuted intra-articular distal femur fractures with locking condylar buttress plate. The results of this strategy will help us to find the effective method of treatment for the distal femur fractures.

  Methods: In a prospective cross-sectional study, 47 patients with intra-articular distal femur fractures after two weeks fracture and treating with locking condylar buttress plate were selected. Then, they were examined for infection, range of knee motion and ::union:: at the first and second week and 1, 2 and 3 months after surgery. The data were analyzed by descriptive statistics and the level of significance was set as p<0.05.

  Results: 53.2% of the patients had closed fractures, 6.4% of them had open type I and the rest showed open type IIIA fracture. The overall ::union:: rate was seen in 80.9% of cases and infection was detected in 19/1% and mal::union:: was observed 21.3% of patients. The mean degree for range of motion was 105.74 ±24.47 and the maximum degree of extension was 20.

  Conclusion : Complete fixation for distal femur fracture type C3 was achieved by buttress plate and using this locking condylar plate was association with less complication such as infection, mal::union:: and non-::union::.