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Total knee arthroplasty (TKA) has been primarily devised for pain free range of movement near physiological demands and even take part in sports and leisure interests along with day to day activities. Therefore we conducted an assessment on the performance of our patients after 5 years of followup. Total of 94 patients ranging from an age group of 38 to 75 years with pathologies of osteoarthritis, rheumatoid arthritis and post traumatic arthritis were subjected to implantation in our institution and included in this restrospective study. All patients were implanted with NexGen Legacy Posterior Stabilisied (LPS) system. The results have been drawn on the basis of the clinical performance and radiographic analysis with a follow up of upto 5 years. Knee society score increase from Preoperatively 60 to postoperatively 85, Knee functional score increase from preoperatively 55 to postoperatively 100. No cases of patella clunk syndrome or patella dislocation were observed in our patients. The final clinical results of operative treatment with Nexgen LPS system after 5 years of follow-up of patients corresponding to daily approved International scoring system. All of this indicates the advantages of this system comparing to its other daily analogues.