Clinical outcomes of Ti-Ni shape-memory patella concentrator combined with cannulated compression screws in the treatment of C2 and C3 patella fracture: a retrospective study of 54 cases

Abstract

Purpose The purpose of this study was to investigate the efficiency of Ti-Ni shape-memory patella concentrator(TNSMPC) combined with cannulated compression screws in the treatment of comminuted patella fracture. Methods Between January 2014 and January 2017, 54 patients of C2 and C3 patella fractures underwent open reduction and internal fixation with TNSMPC combined with cannulated compression screws. All the patients got standard postoperative rehabilitation programs and were regularly followed up for at least 12 months after the operation. X-rays, knee functions and life quality were evaluated during the follow-up. Results All the patients achieved bone healing and recovery of knee function with low incidence of complications according to X-rays and questionnaire surveys. The average operation time and blood loss during surgery were 77.5±25.12minutes and 24.25±4.70ml respectively. The Knee Outcome Survey Activities of Daily Living Scale, range of motion, 36-item Short-form heath survey after the operation were all improved. According to the Bostman’s criteria, the excellent to good rate was 92.6%. Conclusion TNSMPC combined with cannulated compression screws is an effective fixation for C2 and C3 patella fracture with excellent clinical outcomes. In addition, the operation does not increase extra technique difficult or tissue damage relatively, which is worth promotion.