The study involves the enrollment of a sample of patients with indication for total knee replacement surgery in order to compare the conventional surgical technique currently used in the reference departments with the surgical technique with the aid of computer-assisted navigation. The comparison between the two techniques will be performed in terms of clinical-functional results, perioperative bleeding and healthcare costs (surgical time, hospital stay). The research protocol involves the participation of 160 total patients divided into two groups, of 80 patients each, by type of surgical technique.