ABSTRACT: BACKGROUND: The traditional artificial knee prosthesis has been applied successfully in clinic. Some reports have reported that there is high molecular polyethylene pad wear after high-flexion rotating-platform posterior stabilized (PFC sigma RPF) artificial knee prosthesis replacement, and the design of PFC sigma RPF artificial knee prosthesis can solve the problem effectively.OBJECTIVE: To investigate the recent clinical curative effect after PFC sigma RPF artificial knee prosthesis total knee arthroplasty.METHODS: Seventy-eighty patients (113 knees) were treated with PFC sigma RPF artificial knee prosthesis artificial knee prosthesis replacement, the prosthesis was fixed with bone cement and the patella was not treated with replacement. All the patients were followed-up for 3 years. The difference of range of motion and hospital for special knee surgery score before and after replacement were compared.RESULTS AND CONCLUSION: After 3-year follow-up, the range of motion was improved from average 110.7° preoperatively to 124° postoperatively. The mean hospital for special knee surgery score was improved from 54.2 scores preoperatively to 95.4 scores postoperatively. The excellent-good rate was 93.58%. The incidence rate of all kinds of complications was low. The recent clinical curative effect of PFC sigma RPF artificial knee prosthesis replacement is satisfactory. Persistent pain is an important cause of dissatisfaction after total knee arthroplasty. The long-term clinical curative effect still needs further observation.Zhou W, Liu DH, Ma GT, Xu ZW, Jiang HZ, Wu DK, Zhao SY. Total knee arthroplasty with high-flexion rotating-platform posterior stabilized artificial knee prosthesis.Zhongguo Zuzhi Gongcheng Yanjiu. 2012;16(44): 8178-8181.(Figure is included in full-text article.)