Abstract
We report the retrospective analysis of 716 cases of Duofit total hip arthroplasty performed from 1994 to 2005. Since 2004, both standard and lateralized stems were used, while previously only the standard type was available. The results show a low occurrence of complications and a good medium-to long-term survival. The good functional outcome, measured with the Harris hip score, confirms the validity of the prosthetic design and materials.
Key words: Hip, Arthroplasty, Offset, Lever arm, Duofit
References
- 1.Massin P., Geais L., Astoin E., et al. The anatomic basis for the concept of lateralized femoral stems. A frontal plane radiographic study of the proximal femur. J Arthroplasty. 2000;15:93–101. doi: 10.1016/S0883-5403(00)91337-8. [DOI] [PubMed] [Google Scholar]
- 2.Noble P.C., Alexander J.W., Lindahl L.J., et al. The anatomic basis of femoral component design. Clin Orthop Relat Res. 1988;235:148–165. [PubMed] [Google Scholar]
- 3.Yanagimoto S. Basic study of cementless hip prosthesis design: analysis of the proximal emur in Japanese patients with osteoarthritis of the hip. Nippon Seikeigeka Gakkai Zasshi. 1991;65:731–744. [PubMed] [Google Scholar]
- 4.Abraham W.D., Dimon J.H., III Leg length discrepancy in total hip arthroplasty. Orthop Clin North Am. 1992;23:201–209. [PubMed] [Google Scholar]
- 5.Steimberg B., Harris W.H. The offset problem in total hip arthroplasty. Contemp Orthop. 1992;24:556–562. [Google Scholar]
- 6.Davey J.R., O’Connor D.O., Burke D.W., Harris W.H. Femoral component offset: its effect on strain in bonecement. J Arthroplasty. 1993;8:23–26. doi: 10.1016/S0883-5403(06)80103-8. [DOI] [PubMed] [Google Scholar]
- 7.Sakalkale D.P., Sharkey P.F., Eng K., et al. Effect of femoral component offset on polyethylene wear in total hip arthroplasty. Clin Orthop Relat Res. 2001;388:125–134. doi: 10.1097/00003086-200107000-00019. [DOI] [PubMed] [Google Scholar]
- 8.Sakalkale DP, Lombardi AV Jr, Mallory TH, Fada RA (2000) Correlation between prosthetic offset and polyethylene wear in total hip arthroplasty. In: 67th Annual meeting of the American Academy of Orthopaedic Surgeons, 15–19 March, Orlando, Florida
- 9.Fackler C.D., Poss R. Dislocation in total hip arthroplasties. Clin Orthop. 1980;151:169–178. [PubMed] [Google Scholar]
- 10.Charnley J. Biomechanics in low friction arthroplasty of the hip. Berlin Heidelberg New York: Springer; 1979. [Google Scholar]
- 11.Hardinge K. The direct lateral approach to the hip. J Bone Joint Surg Br. 1982;64:17. doi: 10.1302/0301-620X.64B1.7068713. [DOI] [PubMed] [Google Scholar]
- 12.Mahoney OM, Chamnongkich S, Asayama I, Simpson KJ, Kinsey T (2005) The effects of femoral offset on hip abductor muscle strength and gait stability after THA. Presented at: the AAOS, 72nd Annual Meeting, 23–27 February 2005, Washington DC
- 13.McGrory B.J., Morre B.F., Cahalan T.D., et al. Effect of femoral offset on range of motion and abductor muscle strength after THA. J Bone Joint Surg Br. 1995;77:865–869. [PubMed] [Google Scholar]
- 14.Incavo SJ, Havener T, Benson E, et al. Efforts to improve cementless femoral stems in THR. 2-to 5-Year follow-up of a high-offset femoral stem with distal stem modification (Secur-Fit Plus) J Arthroplasty. 2004;19:61–67. doi: 10.1016/j.arth.2003.09.006. [DOI] [PubMed] [Google Scholar]
- 15.Randelli G., Randelli P., Romanò C., Visentin O. L’accoppiamento metallo-metallo: oggi e domani. G Ital Ortop Traum. 2000;26([Suppl1]):583–591. [Google Scholar]
- 16.Gualtieri G., Calderoni P., Ferruzzi A., et al. L’accoppiamento ceramicaceramica: l’esperienza italiana. G Ital Ortop Traum. 2000;26([Suppl1]):586–591. [Google Scholar]
- 17.Widmer K.H., Zurfluh B. Compliant positioning of total hip components for optimal range of motion. J Orthop Res. 2004;22:815–821. doi: 10.1016/j.orthres.2003.11.001. [DOI] [PubMed] [Google Scholar]
- 18.Laurenza F., Lispi A., Ruo R. Angolo cervico-diafisario e off-set femorale: indici qualificanti nella biomeccanica della protesi d’anca. G Ital Ortop Traum. 2001;27:168–172. [Google Scholar]
- 19.Sakai T., Sugano N., Ohzono K., et al. Femoral anteversion, femoral offset, and abductor lever arm after total hip arthroplasty using a modula femoral neck system. J Orthop Sci. 2002;7:62–67. doi: 10.1007/s776-002-8418-7. [DOI] [PubMed] [Google Scholar]
- 20.Ranawat C.S., Rajesh R.R., Rodriguez J.A., Bhende H.S. Correction of limb-length inequality during total hip arthroplasty. J Arthroplasy. 2001;16:715–720. doi: 10.1054/arth.2001.24442. [DOI] [PubMed] [Google Scholar]
- 21.Lindgren J.U., Rysavy J. Restoration of femoral offset during hip replacement. A radiographic cadaver study. Acta Orthop Scand. 1992;63:407–410. doi: 10.3109/17453679209154755. [DOI] [PubMed] [Google Scholar]
- 22.Konyves A., Bannister G.C. The importance of leg length discrepancy after total hip arthroplasty. J Bone Joint Surg Br. 2005;87:155–157. doi: 10.1302/0301-620X.87B2.14878. [DOI] [PubMed] [Google Scholar]
- 23.Bergman G., Craichen F., Rohlman A. Hip joint loading during walking and running, measured in two patients. J Biomechanics. 1993;26:969–990. doi: 10.1016/0021-9290(93)90058-M. [DOI] [PubMed] [Google Scholar]
- 24.Kleemann R.U., Heller M.O., Stoeckle U., et al. THA loading arising from increased femoral anteversion and offset may lead to critical cement stresses. J Orthopaedic Res. 2003;21:767–774. doi: 10.1016/S0736-0266(03)00040-8. [DOI] [PubMed] [Google Scholar]
- 25.Cahalan T.D., Johnson M.E., Liu S., Chao E.Y. Quantitative measurement of hip strength in different age groups. Clin Orthop Relat Res. 1989;246:136–145. [PubMed] [Google Scholar]