[Objective]To present a prospective case series of patients with displaced patellar inferior pole fractures and treated with anterior tension band wiring through cannulated screws.[Methods]During a two-year period between January 2007 and December 2008,ten patients with mean age of 59.8 were identified with distal polar fractures of the patella(AO/OTA classification 45 A1).All ten patients underwent vertical skin exposure,fracture open reduction and internal fixation by anterior tension band wiring through cannulated screws.[Results]There were 3 single fragment fractures and 7 comminuted fractures.With one-year follow-up,all fractures healed clinically in average 8 weeks and radiographically in average 12 weeks.The average range of knee motion arc was 122.5 degrees(range 95~140).Five patients have flexion lag with an average of 17 degrees(range 10~30 degrees).No patient had loss of fracture reduction,implant migration,material failure,or soft-tissue irritation.The average Bostman score was 28.7/30(range 27~30),and average SMFA dysfunction score was 24.1/100(range 15—39).All ten patients stated they were highly satisfied.[Conclusion]Anterior tension band wiring through cannulated screws for displaced patellar inferior polar fractures is a safe,simple and reliable alternative treatment with minimal soft-tissue irritation.Good functional results and recovery can be expected.……
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