Niemeläinen, Mika J, Keijo T Mäkelä, Otto Robertsson, Annette W- Dahl, Ove Furnes, Anne M Fenstad, Alma B Pedersen, Henrik M Schrøder, Aleksi Reito, and Antti Eskelinen. 2020. “The Effect of Fixation Type on the Survivorship of Contemporary Total Knee Arthroplasty in Patients Younger Than 65 Years of Age: A Register- Based Study of 115,177 Knees in the Nordic Arthroplasty Register Association (NARA) 2000–2016”. Acta Orthopaedica 91 (2):184-90. https://doi.org/10.1080/17453674.2019.1710373.