L. J. Klein, G. Puretic, M. Mohaddes, and J. . Kärrholm, “Similar clinical results and early subsidence between the Collum Femoris Preserving and the Corail stem: a randomized radiostereometric study of 77 hips with 2 years’ follow-up”, ActaO, vol. 90, no. 3, pp. 202–208, Feb. 2019.