Comparison of outcomes after bilateral simultaneous total knee arthroplasty using posterior-substituting versus cruciate-retaining prostheses

Preoperative and postoperative assessment at each follow-up. Comparison of group mean values using the paired t-test or Wilcoxon signed ranked test. The threshold for statistical significance was set at a p-value of less than 0.05. CR - cruciate-retaining, PS - posterior-substituting, Pre-op - preoperative, ROM - range of motion, WOMAC - Western Ontario and MacMaster Universities Osteoarthritis Index.