Short-term Results of High-Flex Prosthesis Replacement

Objective To investigate the early clinical results of total knee arthroplasty with high flex prosthesis adopted for the treatment of knee osteoarthritis.Methods Twenty-five knees of 17 patients were followed up,who had been implanted with the LPS-FLEX prosthesis from Aug 2006 to March 2008.In all of the cases,primary total knee arthroplasty was conducted.Results All the patients were followed up from 3 to 18 months with the average of 12 months.The ROM of the knee was(130.80±4.16)°with increased degrees of(32.60±11.38)°(P0.05).KSS knee scores were(90.40±4.16)with improved scores of(58.44±13.4)compared with those before operation,while function scores were(94.20±3.73)with improved scores of(54.80±13.96)(P0.05).All the X-ray films of the knees implanted were analyzed.No mal-alignment or lucent line with the prosthesis was seen in all these X-ray films.Conclusion The short-term follow-up indicates that the patients implanted with the high flex prosthesis have an excellent result and can make significant improvement in postoperative range of motion.