Biomechanics of joint implants

The research is focused on modeling of the hip joint implants. The research objective is to increase the reliability of joint replacements. Reliability of ceramc heads is based on the Weibull weakest link theory. In order to calculate the failure probability it is necessary to determine the volume, in which the stress acts, and the material description of ceramics. Stress in the ceramic heads is determined numerically by finite element method (FEM). Material characteristics are determined experimentally from a set of destruction tests and subsequent statistical processing.


  • Faculty of Mechanical Engineering, Brno UT (prof. Ing. Přemysl Janíček, DrSc;  Ing. Tomáš Návrat, Ph.D)
  • Hospital U sv. Anny in Brno
  • Hospital Bohunice in Brno

Responsible researcher:
V. Fuis

Research team:

In vivo destroyed ceramic head of a hip joint implant
Related papers:

Fuis V., Janíček P.: Sensitivity Analysis of the Material Parameters of the Ceramics on the Inner Radius of the Hip Joint Endoprosthesis Head. In: Jablonski, R.; Brezina, T. ed. Advanced Mechatronics Solutions. Warsawa: Springer, 2015, p. 123-128. Advances in Intelligent Systems and Computing, 393. ISBN 978-3-319-23921-7. ISSN 2194-5357.

Fuis V., Janíček P.: Stress analysis of the hip joint endoprosthesis ceramic head for different values of shape deviations. In: Advanced Materials Research. Dürnten: Trans Tech Publications Ltd, 2014, p. 770-775. ISBN 978-3-03835-102-3. ISSN 1022-6680.

Fuis V.: Tensile stress analyses of the hip joint endoprosthesis ceramic head with real shape deviations. In: 5th International Conference on Biomedical Engineering in Vietnam. NEW YORK: Springer Verlag, 2015, p. 450-453. IFMBE Proceedings, 46. ISBN 978-3-319-11775-1. ISSN 1680-0737.

Fuis V., Janíček P.: Calculation of the bio-ceramic material parameters. In: Mechatronics 2013: Recent Technological and Scientific Advances. Berlin: Springer, 2014, p. 855-861. ISBN 978-3-319-02293-2.

Fuis V., Koukal M., Florian Z., Janíček P.: Computational Modelling of the Shape Deviations of the Sphere Surfaces of Ceramic Heads of Hip Joint Replacement. In: Roa Romero, L. ed. XIII Mediterranean Conference on Medical and Biological Engineering and Computing 2013.Seville: Springer, 2014, p. 89-92. IFMBE Proceedings, 41. ISBN 978-3-319-00845-5. ISSN 1680-0737.

Fuis V., Koukal M., Florian Z.: Shape deviations of the contact areas of the total hip replacement. In: Mechatronics - Recent Technological And Scientific Advances. Berlin: Springer, 2011, p. 203-212. ISBN 978-3-642-23243-5.

Fuis V., Málek M., Janíček P.: Probability of destructions in total joint endoprosthesis ceramic heads using Weibull's theory. In: Fuis, V. ed. Engineering Mechanics 2011. Praha: Ústav termomechaniky AVČR, v.v.i, 2011, p. 1-711. ISBN 978-80-87012-33-8.

Koukal M., Fuis V., Florian Z., Janíček P.: A numerical study of effects of the manufacture perturbations to contacts of the total hip replacement. Engineering Mechanics, 2011, Vol. 18 (1), p. 33-42.

Fuis V., Návrat T.: Calculation of the ceramics Weibull parameters. World Academy of Science, Engineering and Technology, 2011, Vol. 58, p. 642-647.

Fuis V., Návrat T., Vosynek P.: Analyses of the shape deviations of the contact cones of the cotal hip joint endoprostheses. IFMBE Proceedings. Singapure : Springer, 2010 - (Lim, C.; Goh, J.) p. 1451-1454.

Fuis V.: Tensile stress analysis of the ceramic head with micro and macro shape deviations of the contact areas. Recent Advances in Mechatronics 2008-2009. Berlin : Springer, 2009, p. 425-430.

Fuis V., Janíček P., Hlavoň P.: Contact surfaces of big joints - sites of the development of limit states and other considerations. Engineering Mechanics, 2008, Vol. 15 (5), p. 381-388.

Fuis V., Janíček P., Houfek L.: Stress and reliability analyses of the hip joint endoprosthesis ceramic head with macro and micro shape deviations. 13th International Conference on Biomedical Engineering. Berlin: Springer Berlin Heidelberg, 2008, p. 1580-1584.

Fuis V., Varga J.: Stress analyses of the hip joint endoprosthesis ceramic head with different shapes of the cone opening. 13th International Conference on Biomedical Engineering. Berlin : Springer Berlin Heidelberg, 2008, p. 2012-2015.

Fuis V., Návrat T., Hlavoň P., Koukal M., Houfek M.: Analysis of contact pressure between the parts of total hip joint endoprosthesis with shape deviations. Journal of Biomechanics, 2007, Vol. 40, suppl. 2, p. 558-S558.

Fuis V., Návrat T., Hlavoň P., Janíček P.: Reliability of the ceramic head of the total hip joint endoprosthesis using Weibull’s weakest-link theory. World Congress on Medical Physics and Biomedical Engineering 2006. Seoul : Springer, p. 1-4.

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