S. C. S. Rivrud, S. M. Röhrl, and J. A. M. J. van Leeuwen, “Effects of patient-specific positioning guides (PSPGs) vs. conventional instrumentation on patient-reported outcome in total knee arthroplasty: secondary analysis of a randomized controlled trial after 5 years”, ActaO, vol. 94, pp. 354–359, Jul. 2023.