Outcomes of dual plating for unstable distal femoral fractures: a subgroup comparison between periprosthetic and non-periprosthetic fractures

Purpose This study aimed to evaluate the outcomes of dual plating for unstable distal femoral fractures via a subgroup analysis between periprosthetic and non-periprosthetic fractures. Methods This retrospective cohort study analyzed the outcomes of dual plating for unstable distal femoral fractures among 49 consecutive patients (43 women and 6 men) enrolled from July 2008 to August 2020. The patients were divided into periprosthetic (group P, n= 29) and non-periprosthetic (group N, n= 20) groups. The radiographic outcomes included the mechanical lateral distal femoral angle (mLDFA) and union rate based on the computed tomography findings. The clinical parameters included the knee range of motion and knee society score (KSS). Results The mean patient age was 71.1 years, and the average follow-up period was 37 months (range, 12-138 months). Union was achieved in 47 patients (96%). The average final mLDFA was 90.5 degrees in group P and 88.3 degrees in group N. The average final knee range of motion was 130 degrees in group P and 107 degrees in group N. The average final KSS was 73.8 in group P and 87.1 in group N. Conclusion Dual plating for distal femoral fractures yielded an excellent union rate and limb alignment with a low complication rate.

Automated summary

This study evaluated the outcomes of dual plating for unstable distal femoral fractures through a subgroup analysis of periprosthetic and non-periprosthetic fractures. The results showed that dual plating treatment had a high union rate and achieved good limb alignment with a low complication rate.