Pain and impaired motor function significantly reduce the quality of life in patients suffering from a knee osteoarthritis. The TKA is the one and only effective treatment in advanced stages of gonarthrosis. The aim of this study was to evaluate the results obtained in patients after bicondylar TKA with/without patellar resurfacing. In the period from September 2008 to October 2011 were operated on 320 knee joints. Every patient was evaluated on the basis of clinical and radiological examination. We found that after surgical procedure in: 98,7% of the cases there was no pain and gait efficiency has improved, 94,7% of the cases was achieved correction of the axis of the lower limb operated on, 91% of the patients were satisfied with the outcome.