von Hintze, J. et al. 2025. Incidence of constrained condylar and hinged knee implants and mid- to long-term survivorship: a register-based study from the Nordic Arthroplasty Register Association (NARA). Acta Orthopaedica. 96, (Feb. 2025), 142–150. DOI:https://doi.org/10.2340/17453674.2025.42999.