Milligan DJ, et al. - Through a prospective analysis of the 20-year survivorship of a cohort of 487 consecutive patients who underwent cemented total knee arthroplasty (TKA) under the care of a single surgeon, the researchers intended to assess the long-term survivorship of a fully cemented mobile bearing TKA. In 487 patients, 542 consecutive primary TKAs were performed. At 20 years post-operation, a total of 139 knees were evaluated. Through revision for any cause as a primary endpoint, overall cumulative survivorship was 98.0%. For the patient cohort, mean Knee Society Scores were 87.3 and 52.5. A total of 11 patients were reviewed within 20 years (two for aseptic loosening, two for unexplained pain, five secondary patellar resurfacings for anterior knee pain, one for late infection and one-liner exchange following spin-out). Hence, this series exhibited the highest survivorship and adequate outcome of a cemented mobile bearing TKA at 20 years.