Structural Evaluation of Ceramic Femoral Heads: Effect of Taper Friction, Support Conditions and Trunnion Compliance-Reference-Cited by-同舟云学术

Structural Evaluation of Ceramic Femoral Heads: Effect of Taper Friction, Support Conditions and Trunnion Compliance

Published:1995-08-01 Issue:3 Volume:117 Page:293-299
ISSN:0148-0731
Container-title:Journal of Biomechanical Engineering
language:en
Short-container-title:

Author:

Dragoni E.¹,Andrisano A. O.²

Affiliation:

1. Department of Mechanics, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy

2. University of Modena, Via Campi 213/B, 41100 Modena, Italy

Abstract

The outcome of a nonlinear finite element stress analysis of ceramic heads for artificial hip joints is presented. The analysis mainly covers the influence of taper friction, support conditions and trunnion modulus of elasticity on the hoop stress distribution at the surface of the head bore. The paper quantifies how much the maximum tensile stress decreases with increasing frictional coefficient, with stiffening of the support and with stiffening of the trunnion material. An appreciable rise of the maximum tensile upon unloading of the head is also shown for the case of cup support. The computational results are found in close correspondence with photoelastic measurements of taper pressures and encourage the use, for preliminary design purposes, of an approximate theoretical model retrieved from the literature.

Publisher

ASME International

Subject

Physiology (medical),Biomedical Engineering

Link

http://asmedigitalcollection.asme.org/biomechanical/article-pdf/117/3/293/5766480/293_1.pdf

Reference47 articles.

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2. Andrisano A. O. , CiavattiV., DragoniE., and StrozziA., 1990b, “A Photoelastic Stress Analysis of Ceramics Heads for Total Hip Replacements,” Materials Engng, Vol. 1, pp. 941–948.

3. Bertuzzi, F., 1991, “Numerical and Photoelastic Analyses of Prosthetic Ceramic Heads,” M.S. thesis. University of Bologna, (in Italian).

4. Boutin P. , 1972, “Arthroplastie Totale de la Hanche par Prothe`se en Allumine Fritte´e,” Rev. Chir. Orthop., Vol. 58, pp. 229–246.

5. Boutin P. , ChristelP., DorlotJ.-M., MeunierA., de RoquancourtA., BlanquaertD., HermanS., SedelL., and WitvoetJ., 1988, “The Use of Dense Alumina-Alumina Ceramic Combination in Total Hip Replacement,” J. Biomedical Materials Research, Vol. 22, pp. 103–132.

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