Kim YH, et al. - This study was sought to ascertain long-term (up to 27 years) results of fixed-bearing vs mobile-bearing total knee arthroplasties (TKAs) in patients < 60 years with osteoarthritis. Researchers recruited a total of 291 patients (582 knees; mean age 58 ± 5 years), who received a mobile-bearing TKA in one knee and a fixed-bearing TKA in the other. The mean duration of follow-up was 26.3 y (range 24-27). No significant differences were found in functional outcomes, rate of loosening, osteolysis, or survivorship between the 2 groups.