Failure rate of cemented and uncemented total hip replacements: Register study of combined Nordic database of four nations

Keijo T. Mäkelä^*, Markus Matilainen, Pekka Pulkkinen, Anne M. Fenstad, Leif Havelin, Lars Engesaeter, Ove Furnes, Alma B. Pedersen, Søren Overgaard, Johan Kärrholm, Henrik Malchau, Göran Garellick, Jonas Ranstam, Antti Eskelinen