The aim of this paper is to describe a new numerical–experimental method to determine the stiffness of a conceptual proximal femoral prototype. The methodology consists of the comparison of the numerical and experimental displacement distributions of the prosthesis loaded as a cantilever beam to validate a design concept: controlled stiffness prosthesis. The manufactured prototype used to test the applicability of the numerical–experimental procedure integrates a stiff metal core bonded to a composite material made of an epoxy resin reinforced with carbon-glass braided pre-forms. The prosthesis with an embedded controlled stiffness concept was obtained by varying the geometry of the core with the composite layer thickness.
Issue Section:
Technical Papers
1.
Huiskes
, R.
, 1993
, “Failed Innovation in Total Hip Replacement. Diagnosis and Proposals for a Cure
,” Acta Orthop. Scand.
, 64
, No. 6
, pp. 699
–716
.2.
Kuiper, J. H., and Huiskes, R., 1993, “Numerical Optimization of Hip-Prosthetic Stem Material,” in: Computer Methods in Biomechanics and Biomedicine, Middleton et al., eds., Gordon and Breach, New York, pp. 78–84.
3.
Blake, T. A., Davy, D. T., Saravanos, D. A., and Hopkins, D. A., 1992, “Numerical Optimization of Composite Hip Endoprostheses,” in: Proc. 4th AIAA/USAF/NASA/OAI Symposium on Multidisciplinary Analysis and Optimization, pp. 119–129.
4.
Chang
, F.
, Perez
, J. L.
, and Davidson
, J. A.
, 1990
, “Stiffness and Strength Tailoring of a Hip Prosthesis Made of Advanced Composite Materials
,” J. Biomed. Mater. Res.
, 24
, pp. 873
–899
.5.
Claes, I., Burri, C., Neugebauer, R., and Gruber, U., 1983, “Experimental Investigations on Hip Prostheses With Carbon Fibre Reinforced Carbon Shafts and Ceramic Heads,” in: Ceramics in Surgery, P. Vincenzini, ed., Amsterdam, pp. 243–250.
6.
Christel
, P.
, Meunier
, A.
, and Leclerq
, S.
, 1987
, “Development of a Carbon–Carbon Hip Prosthesis
,” J. Biomed. Mater. Res., Applied Biomaterials
, 21
, No. A2
, pp. 191
–218
.7.
Davidson, R., Brabon, S., Lee, R. J., Nelson, K., Unwin, P., and Roughley, P., 1996, “The Development of CFRP Based Hip Stems,” Proc. 7th European Conference on Composite Materials, ECCM-7, London, pp. 513–517.
8.
Devanathan, D., 1991, “Orthopadic Composites” International Encyclopedia of Composites, Stuart M. Lee, ed., New York, 4, pp. 74–86.
9.
Fu, W., 1998, “Design Optimization of a Laminated Composite Femoral Component for Total Hip Joint Arthroplasty,” Ph.D. thesis, Graduate School of Clemson University.
10.
Widmer, M., Callenbach, T., Isler, J., Fro¨hlich, M., Meier, D., Mayer, J., Wintermantel, E., Tschanz, P., Lu¨thi, H., Matzenauer, K., and Klostermann, L., 1995, “Injection Moulding of Carbon Fibre Reinforced PEEK for Anisotropic Hip-Prostheses: Preliminary Results,” Proc. III Portuguese Congress in Biomedical Engineering, Porto, Portugal.
11.
Simo˜es
, J. A. O.
, Taylor
, M.
, Marques
, A. T.
, and Jeronimidis
, G.
, 1998
, “Preliminary Investigation of a Novel Controlled Stiffness Proximal Femoral Prosthesis
” Proc. Inst. Mech. Eng.
, 212
, Part H, pp. 165
–175
.12.
Simo˜es
, J. A.
, Marques
, A. T.
, and Jeronimidis
, G.
, 2000
, “Design of a Controlled-Stiffness Composite Proximal Femoral Prosthesis
,” Comput. Sci. Eng.
, 60
, pp. 559
–567
.13.
Kuiper, J. H., 1993, “Numerical Optimization of Artificial Hip Joint Designs,” Ph.D. thesis, University of Nijmegen, The Netherlands.
14.
Simo˜es, J. A. O., Anto´nio, C. A. C., and Marques, A. T., 1996, “Material Stiffness Optimization for a Composite Hip Prosthesis,” in: Proc. 1st International Conference on Composite Science and Technology, S. Adali and V. E. Verijienko, eds., Durban, pp. 477–482.
15.
Taylor
, N.
, Tanner
, K. E.
, Freeman
, M. A. R.
, and Yettram
, A. L.
, 1995
, “Cancellous Bone Stresses Surrounding the Femoral Component of a Hip Prosthesis: an Elastic–Plastic Finite Element Analysis
,” Med. Eng. Phys.
, 79B
, pp. 544
–550
.16.
Taylor
, M.
, and Tanner
, K. E.
, 1997
, “Fatigue Failure of Cancellous Bone: a Possible Cause of Implant Migration and Loosening
,” J. Bone Jt. Surg., Br. Vol.
, 79B
, pp. 181
–182
.17.
Wolfram, S., 1991, Mathematica—A System for Doing Mathematics by Computer, Addison-Wesley Publishing Company, Inc., 2nd ed.
Copyright © 2001
by ASME
You do not currently have access to this content.