Hasan, S. et al. 2019. All-polyethylene versus metal-backed posterior stabilized total knee arthroplasty: similar 2-year results of a randomized radiostereometric analysis study . Acta Orthopaedica. 90, 6 (Sep. 2019), 590–595. DOI:https://doi.org/10.1080/17453674.2019.1668602.