Continuous periprosthetic bone loss but preserved stability for a collum femoris-preserving stem: follow-up of a prospective cohort study of 21 patients with dualenergy X-ray absorptiometry and radiostereometric analysis with minimum 8 years of follow-up. - NYSTRÖM, Andreas; KIRITOPOULOS, Demostenis; MALLMIN, Hans; LAZARINIS, and Stergios (Acta Orthopaedica, 2022)