Mid-term outcomes of computer-assisted total knee arthroplasty

Purpose The aim of this study is to investigate the clinical results of total knee arthroplasty (TKA) using a navigation system after a minimum of 5 years. Method Thirty cases of posterior-stabilized, TKA-implanted using a computed tomography-free navigation system were compared with 30 cases having matched TKA of the same type implanted via a classical, manual technique. At mid term, a minimum of 5 years after surgery, Knee Society scores (KSSs), Knee Society Functional scores (KSFSs), range of motion (ROM), and radiographic results of 27 patients in each group were assessed and reported in this study. Results The accuracy of the implantations in relation to the coronal mechanical axis in the navigation group was superior to that of the manual group ( P