An Experimental Study of Femoral Cement Stress in Total Hip Replacement — Influence of Structural Stiffness of the Femoral Stem

Abstract

This paper describes the measurement of femoral cement stresses in model femora using embedded strain gauges. In particular the influence of the elastic modulus of the stem material is examined. The study showed that while compressive stresses in the proximal cement are increased quite markedly with lower modulus materials, the important circumferential tensile stresses in this area are only marginally affected. Furthermore, the stresses were all well below the quoted failure levels for bone cement.

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References

Burke

D. W.

Davies

J. P.

O'Connor

D. O.

Harris

W. H.

(1984a) Experimental strain analysis in the femoral cement mantle of simulated total hip arthroplasties, Proc. of 30th Annual ORS Meeting, Atlanta, Georgia, p. 296.

Burke

D. W.

Davies

J. P.

O'Connor

D. O.

Harris

W. H.

(1984b) A comparison of acrylic cement and femoral bone strains in total hip replacements using Titanium versus Chrome Cobalt implants, Proc. of 30th Annual ORS Meeting, Atlanta, Georgia, p. 361.

Cohen

P. A.

(1984) Stress in fixation cement in total hip replacement, BSc(Eng) laboratory thesis, University of Cape Town.

Crowninshield

R. D.

Brand

R. A.

Johnston

M. D.

Milroy

J. C.

(1980) An analysis of femoral component stem design in total hip arthroplasty, J. Bone Jt Surg., 62(A), 68–78.

Crowninshield

R. D.

Tolbert

J. R.

(1983) Cement strain measurement surrounding loose and bonded femoral component stems, Proc. of 29th Annual ORS Meeting, Anaheim, California, p. 160.

Heuermann

M. H.

(1983) The design and testing of a simulated model femur, BSc(Eng) laboratory thesis, University of Cape Town.

Lewis

J. L.

Askew

M. J.

Wixson

R. L.

Kramer

G. C.

Tarr

R. R.

(1984) The influence of prosthetic stem stiffness and of a calcar collar on stresses in the proximal end of the femur with a cemented femoral component, J. Bone Jt Surg., 66(A), 280–286.

Miles

A. W.

Dall

D. M.

MacLeland

B. F.

(1983) Modelling the femoral load transfer in total hip joint replacement, Engng Med., 12, 61–64.

Tarr

R. R.

Clarke

I. C.

Gruen

T. A.

Sarmiento

(1982) Predictions of cement-bone failure criteria: Threee-dimensional finite element models versus clinical reality of total hip replacement, in Finite elements in biomechanics (edited by Gallagher ), John Wiley, New York, Ch. 16, pp. 345–359.