The shear strength of trabecular bone from the femur, and some factors affecting the shear strength of the cement-bone interface

  • M. Halawa
  • A. J. C. Lee
  • R. S. M. Ling
  • S. S. Vangala
Article

Summary

The shear strength of trabecular bone from the femur has been studied. In general, the strongest trabecular bone is found close to the cortico-cancellous junction, though its shear strength depends also on the relationship of the trabeculae to the plane of shear. Some factors affecting the shear strength of the cement-bone interface have been investigated. In vitro, maximal cement-bone interface shear strength is obtained by exposing and thoroughly cleaning strong trabecular bone, and then forcing onto it under pressure low viscosity cement.

Zusammenfassung

Die Scherkräfte der Knochentrabekel des Femur wurden untersucht. Im allgemeinen wird der stärkste travikuläre Knochen nahe des corticospongiösen Überganges gefunden, wobei jedoch die Scherkraft zusätzlich von dem Verhältnis der Knochentrabekel zur Ebene, in der die Scherkräfte wirken, abhängt. Einige Faktoren, die die Scherkraft an der Zementknochengrenze beeinflussen, wurden untersucht. In vitro wird die größte Scherkraft an der Zementknochengrenze erreicht durch Freilegen und gründliches Säubern des starken travikulären Knochens und anschließend durch Einpressen von Zement mit niedriger Viskosität.

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Copyright information

© J. F. Bergmann Verlag 1978

Authors and Affiliations

  • M. Halawa
    • 2
  • A. J. C. Lee
    • 1
  • R. S. M. Ling
    • 2
  • S. S. Vangala
    • 1
  1. 1.Department of Engineering ScienceUniversity of ExeterEngland
  2. 2.Princess Elizabeth Orthopaedic HospitalExeterEngland

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