Radiographic evaluation
The computed tomography images were measured and reviewed by two experienced orthopedic surgeons, who did not take part in the surgery or further research. Any disagreement between them was solved by the senior author of this study. All knees underwent CT evaluation in the post-operative period using Philips Incisive CT (Philips Healthcare, Cleveland, OH, USA). Each patient signed an informed consent for the CT examination. Both rotation and coverage measurements were performed using the INFINITT program by two independent orthopedic surgeons, who did not take part in any other activity associated with this study. Tibial component rotation was measured on CT scans using the method suggested by Benazzo et al. [Tibial component rotation measurement, in this case – 12° of internal rotationTibial coverage measurement. Area1 represents tibial component surface, area2 represents tibial cut surface just below the cement level