J Orthopaed Traumatol (2012) 13:137–143 2. Davidson D, de Steiger R, Graves S, Tomkins A (2010) National Joint Replacement Register; annual report 2010. Australian Orthopaedic Association, Adelaide 3. Engesæter L, Furnes O, Havelin L, Fenstard A (2010) The Nor- wegian Arthroplasty Register. Department of Orthopaedic Sur- gery, Haukeland University Hospital, Bergen 4. Karrholm J, Herberts P, Hultmark P, Malchau H, Nivbrant B, Thanner J (1997) Radiostereometry of hip prostheses. Review of methodology and clinical results. Clin Orthop Relat Res (344): 94–110 5. Malchau H (2000) Introducing new technology: a stepwise algorithm. Spine (Phila Pa 1976) 25:285 6. Karrholm J, Borssen B, Lowenhielm G, Snorrason F (1994) Does early micromotion of femoral stem prostheses matter? 4–7-year stereoradiographic follow-up of 84 cemented prostheses. J Bone Joint Surg Br 76:912–917 7. Ryd L, Albrektsson BE, Carlsson L, Dansgard F, Herberts P, Lindstrand A, Regner L, Toksvig-Larsen S (1995) Roentgen stereophotogrammetric analysis as a predictor of mechanical loosening of knee prostheses. J Bone Joint Surg Br 77:377–383 8. Shen G (1998) Femoral stem ﬁxation. An engineering interpre- tation of the long-term outcome of Charnley and Exeter stems. J Bone Joint Surg Br 80:754–756 9. Mirza SB, Dunlop DG, Panesar SS, Naqvi SG, Gangoo S, Salih S (2010) Basic science considerations in primary total hip replacement arthroplasty. Open Orthop J 4:169–180. doi:10.2174/ 1874325001004010169 10. Derbyshire B, Prescott RJ, Porter ML (2009) Notes on the use and interpretation of radiostereometric analysis. Acta Orthop 80:124–130. doi:10.1080/17453670902807474 11. Kobayashi A, Donnelly WJ, Scott G, Freeman MA (1997) Early radiological observations may predict the long-term survival of femoral hip prostheses. J Bone Joint Surg Br 79:583–589 12. Malik MH, Fisher N, Gray J, Wroblewski BM, Kay PR (2005) Prediction of Charnley femoral stem aseptic loosening by early post-operative radiological features. Int Orthop 29:268–271. doi:10.1007/s00264-005-0667-1 143 13. Husby OS, Haugan K, Benum P, Foss OA (2010) A prospective randomised radiostereometric analysis trial of SmartSet HV and Palacos R bone cements in primary total hip arthroplasty. J Ort- hop Traumatol 11:29–35. doi:10.1007/s10195-010-0087-x 14. Selvik G (1989) Roentgen stereophotogrammetry. A method for the study of the kinematics of the skeletal system. Acta Orthop Scand Suppl 232:1–51 15. Huiskes R, Verdonschot N, Nivbrant B (1998) Migration, stem shape, and surface ﬁnish in cemented total hip arthroplasty. Clin Orthop Relat Res (355):103–112 16. Hallan G, Aamodt A, Furnes O, Skredderstuen A, Haugan K, Havelin LI (2006) Palamed G compared with Palacos R with gentamicin in Charnley total hip replacement. A randomised, radiostereometric study of 60 hips. J Bone Joint Surg Br 88: 1143–1148. doi:10.1302/0301-620X.88B9.18008 17. Stefansdottir A, Franzen H, Johnsson R, Ornstein E, Sundberg M (2004) Movement pattern of the Exeter femoral stem; a radio- stereometric analysis of 22 primary hip arthroplasties followed for 5 years. Acta Orthop Scand 75:408–414. doi:10.1080/00016 470410001169-1 18. Valstar ER, Gill R, Ryd L, Flivik G, Borlin N, Karrholm J (2005) Guidelines for standardization of radiostereometry (RSA) of implants. Acta Orthop 76:563–572. doi:10.1080/1745367051004 1574 19. Biau DJ, Brand RA (2009) Robert Merle d’Aubigne, 1900–1989. Clin Orthop Relat Res 467:2–6. doi:10.1007/s11999-008-0571-2 20. Onsten I, Akesson K, Besjakov J, Obrant KJ (1995) Migration of the Charnley stem in rheumatoid arthritis and osteoarthritis. A Roentgen stereophotogrammetric study. J Bone Joint Surg Br 77:18–22 21. McCalden RW, Charron KD, Yuan X, Bourne RB, Naudie DD, MacDonald SJ (2010) Randomised controlled trial comparing early migration of two collarless polished cemented stems using radiostereometric analysis. J Bone Joint Surg Br 92:935–940. doi:10.1302/0301-620X.92B7.24462 123