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STRESSES IN THE STERNUM: AN EXAMPLE OF MODELLING THE EFFECTS OF IMPLANTS ON HARD TISSUE David W.L. Hukins University of Birmingham.

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Presentation on theme: "STRESSES IN THE STERNUM: AN EXAMPLE OF MODELLING THE EFFECTS OF IMPLANTS ON HARD TISSUE David W.L. Hukins University of Birmingham."— Presentation transcript:

1 STRESSES IN THE STERNUM: AN EXAMPLE OF MODELLING THE EFFECTS OF IMPLANTS ON HARD TISSUE David W.L. Hukins University of Birmingham

2 REPAIRING THE STERNUM

3 TENSION IN A WIRE Force F = rLP Pressure P < 40 kPa L = 0.25 m r = 0.15 m F = rLP/6 = 250 N F r L

4 REDUCING CONTACT STRESS FE modelling of stresses in bone: Dimensions of sternum Properties of cortical and cacellous bone Stochastic FE modelling

5 STRESSES IN BONE R S Jutley, M A Watson, D E T Shepherd & D W L Hukins Finite element analysis of stress around a sternum crew used to prevent sternal dehiscence after heart surgery Journal of Engineering in Medicine, 216, 315-321 (2002).


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