The geometry of the keel determines the behaviour of the tibial tray against torsional forces in total knee replacement

S. García David, J. A. Cortijo Martínez, I. Navarro Bermúdez, F. Maculé, P. Hinarejos, L. Puig-Verdié, J. C. Monllau, J. A. Hernández Hermoso

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1 Citation (Scopus)

Abstract

© 2013 SECOT. The keel design of the tibial tray is essential for the transmission of the majority of the forces to the peripheral bone structures, which have better mechanical proprieties, thus reducing the risk of loosening. The aim of the present study was to compare the behaviour of different tibial tray designs submitted to torsional forces. Four different tibial components were modelled. The 3-D reconstruction was made using the Mimics software. The solid elements were generated by SolidWorks. The finite elements study was done by Unigraphics.A torsional force of 6 Nm. applied to the lateral aspects of each tibial tray was simulated.The GENUTECH tibial tray, with peripheral trabecular bone support, showed a lower displacement and less transmitted tensions under torsional forces. The results suggest that a tibial tray with more peripheral support behaves mechanically better than the other studied designs.
Original languageEnglish
Pages (from-to)329-335
JournalRevista Espanola de Cirugia Ortopedica y Traumatologia
Volume58
Issue number6
DOIs
Publication statusPublished - 1 Jan 2014

Keywords

  • Keel
  • Tibial tray design
  • Torsional force
  • Total knee replacement

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