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Fixaton techniques for pelvis ring injury

The goal of this project was to compare the reached stability in the pelvis ring in the case of Denis I and II fractures applying the following three techniques:

  1. Direct bone plate fixation
  2. Narrow and wide DC-plate fixation
  3. KFI-H plate fixation.

The main direction of the method was to apply final element analysis, but there were several cadaver tests in our Laboratory as well.

The origin of the problem: the Denis I and the Denis II fracture in the geometry models of the FEA:

The Denis I and the Denis II fracture The Denis I and the Denis II fracture

The three types of fixation and the FE mesh:

From left to right: Direct plate-, DC-plate- and KFI-H plate fixation From left to right: Direct plate-, DC-plate- and KFI-H plate fixation

Validating with cadaver experiments (cyclic compression tests) :

The cadaver test phase of the project The cadaver test phase of the project

The main result of the project was that the difference in the stability of the techniqes not as significant as the difference between the invasivity.

Bodzay T, Asbóth L, Szita J, Váradi K. Medencegyűrű-sérülések műtéti rögzítésének végeselemes modellezése. Biomech Hung 2008;I(1):37-46.

Bodzay T, Szita J, Manó S, Kiss L, Jónás Z, Frenyó S, Csernátony Z. Biomechanical comparison of two stabilization techniques for unstable sacral fractures. J Orthop Sci. 2012;17(5):574-9. DOI 10.1007/s00776-012-0246-4.

General information

Parent department:
Department of Orthopaedic Surgery, University of Debrecen

Address:
H-4032 Nagyerdei krt. 98, Debrecen, Hungary

Phone:
+36 52 411 717/56983

Fax:
+36 52 255 814

E-mail:
biomech@med.unideb.hu

Web:
www.biomech.med.unideb.hu