Publication detail

Stress analysis of Burch-Schneider cage

ŘEHÁK, K. FLORIAN, Z. KRPALEK, D. MARCIÁN, P. MATUG, M. VALÁŠEK, J.

Original Title

Stress analysis of Burch-Schneider cage

English Title

Stress analysis of Burch-Schneider cage

Type

conference paper

Language

en

Original Abstract

This article deals with the stress analysis of the Burch-Schneider cage as applied to a hip joint. Due to the complex geometry of the solved problem, material properties and complex boundary condition, the finite element method was chosen. The solved system consists of the pelvic bone, a part of the os sacrum, a polyethylene cup and ceramic heads. In this work a poor-quality cancellous bone was given by the value of the modulus of elasticity is modelled. Furthermore, two model types are considered in this study a model with degraded mechanical properties of the cancellous bone, which does not worsen due to stress, whereas the other model shows a case of bone necrosis due to stress. Load was applied to the ceramic head in the direction of the resultant butt force, which had been determined by the resultant forces. The analysis of the results indicates that in the model variant with the necrotic bone tissue of such an extent that was considered, damage may occur due to the cyclical loading. However, in the variant with degraded mechanical properties, which are not deteriorating due to stress anymore, the limit state does not occur.

English abstract

This article deals with the stress analysis of the Burch-Schneider cage as applied to a hip joint. Due to the complex geometry of the solved problem, material properties and complex boundary condition, the finite element method was chosen. The solved system consists of the pelvic bone, a part of the os sacrum, a polyethylene cup and ceramic heads. In this work a poor-quality cancellous bone was given by the value of the modulus of elasticity is modelled. Furthermore, two model types are considered in this study a model with degraded mechanical properties of the cancellous bone, which does not worsen due to stress, whereas the other model shows a case of bone necrosis due to stress. Load was applied to the ceramic head in the direction of the resultant butt force, which had been determined by the resultant forces. The analysis of the results indicates that in the model variant with the necrotic bone tissue of such an extent that was considered, damage may occur due to the cyclical loading. However, in the variant with degraded mechanical properties, which are not deteriorating due to stress anymore, the limit state does not occur.

Keywords

Burch-Schneider cage, hip joint, Finite element method, stress-strain analysis.

RIV year

2011

Released

09.05.2011

Publisher

Institute of Thermomechanics

Location

Prague

ISBN

978-80-87012-33-8

Book

Engineering Mechanics 2011, 17th International Conference

Edition

1

Edition number

2011

Pages from

523

Pages to

526

Pages count

4

Documents

BibTex


@inproceedings{BUT72809,
  author="Kamil {Řehák} and Zdeněk {Florian} and David {Krpalek} and Petr {Marcián} and Michal {Matug} and Jiří {Valášek}",
  title="Stress analysis of Burch-Schneider cage",
  annote="This article deals with the stress analysis of the Burch-Schneider cage as applied to a hip
joint. Due to the complex geometry of the solved problem, material properties and complex boundary
condition, the finite element method was chosen. The solved system consists of the pelvic bone, a part of
the os sacrum, a polyethylene cup and ceramic heads. In this work a poor-quality cancellous bone was
given by the value of the modulus of elasticity is modelled. Furthermore, two model types are considered
in this study a model with degraded mechanical properties of the cancellous bone, which does not
worsen due to stress, whereas the other model shows a case of bone necrosis due to stress. Load was
applied to the ceramic head in the direction of the resultant butt force, which had been determined by the
resultant forces. The analysis of the results indicates that in the model variant with the necrotic bone
tissue of such an extent that was considered, damage may occur due to the cyclical loading. However, in
the variant with degraded mechanical properties, which are not deteriorating due to stress anymore, the
limit state does not occur.",
  address="Institute of Thermomechanics",
  booktitle="Engineering Mechanics 2011, 17th International Conference",
  chapter="72809",
  edition="1",
  howpublished="print",
  institution="Institute of Thermomechanics",
  year="2011",
  month="may",
  pages="523--526",
  publisher="Institute of Thermomechanics",
  type="conference paper"
}