Kaptein BL, den Hollander P, Thomassen B, et al. - This study was intended to compare the migration of the cemented ATTUNE fixed bearing cruciate-retaining tibial component with the cemented Press-Fit Condylar (PFC)-sigma fixed bearing cruciate-retaining tibial component. Researchers further compared clinical and radiological outcomes and Patient-Reported Outcome Measures (PROMs). They performed a single-blinded randomized, non-inferiority study including 74 patients. They obtained PROMS preoperatively and at three, six, 12, and 24 months postoperatively. For measuring radiolucencies, radiographs were collected at two weeks and two years postoperatively. The initial version of the ATTUNE tibial component was not inferior with respect to overall migration in the first two postoperative years, although it exhibited relatively more backwards tilting and radiolucent lines at the implant-cement interface than the PFC-sigma. The outcomes suggested that the version of the ATTUNE tibial component examined in this study has subsequently undergone modification by the manufacturer.