Comminuted inferior pole fracture of patella can be successfully treated with rim-plate-augmented separate vertical wiring

Introduction: We present the surgical technique of rim-plate-augmented separate vertical wiring for comminuted inferior pole fracture of the patella and report the clinical outcomes. Materials and methods: Between July 2013 and January 2016, 13 patients (7 male and 6 female) who were diagnosed with comminuted inferior pole fracture of the patella in preoperative computed tomography and underwent a minimum of 1 year of follow-up were enrolled in this study. Mean patient age was 57.7 years (range 28–72 years). All patients underwent open reduction and internal fixation by rim-plate-augmented separate vertical wiring. Bony union, complications, range of motion and Bostman score were the clinical outcomes. Results: Bony union was achieved in all cases at an average of 10 weeks after surgery (range 8–12). There was no loss of reduction and fixative failure during follow-up. The average range of motion was 127° (range 120°–130°). The mean Bostman score at last follow-up was 29.6 points (range 27–30) and graded excellent in 12 patients. Conclusion: Rim-plate-augmented separate vertical wiring demonstrated secure fixation and favorable clinical outcomes. This study provides evidence for its effectiveness as a fixation method for treating displaced, comminuted inferior pole fracture of the patella.