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Medical and biological engineering

, Volume 12, Issue 6, pp 763–767 | Cite as

Fracture energy of bone in a shear mode

  • M. H. Pope
  • M. C. Murphy
Article

Abstract

The role of the osteon as the basic strengthening unit of compact bone is discussed. Using previous work on the shear strength of bone, an analysis is given enabling a computation to be made of the mode-II (debonding) fracture energy. The evidence suggests that bone, like many reinforced composites, derives its excellent fracture characteristics from the existence of a week osteon-matrix interface.

Keywords

Fracture energy of bone 

Sommaire

Le rôle de l'ostón en tant qu'élément de renforcement de base osseux compacte est débattu. A partir de travaux antérieurs sur la résistance des os au cisaillement, on donne une analyse permettant de calculer l'énergie d'une fracture de mode II. Des données suggèrent que l'os, ainsi que de nombreux autres composés renforcés, doivent leurs caractéristiques excellentes de rupture à l'existence d'une surface commune ostéon-matrice peu résistante.

Zusammenfassung

Dieser Artikel bespricht die Rolle des Osteons als als Verstärkung der Knochenrinde. Aufbauend auf frühere Arbeiten über die Scherbeständigkeit von Knochen wird eine Analyse angegeben, durch die man die Bruchenergie des Modus II (Lösung der Haftung) berechnen kann. Die vorliegenden Beweise lassen vermuten, daß Knochen, wie viele verstärkte Verbundstoffe, ihre ausgezeichnete Bruchfestigkeit vom Vorhandensein einer schwachen Osteon-Matrix-Grenzfläche ableiten.

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References

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Copyright information

© International Federation for Medical & Biological Engineering 1974

Authors and Affiliations

  • M. H. Pope
    • 1
  • M. C. Murphy
    • 2
  1. 1.Department of Orthopaedic Surgery, Department of Mechanical EngineeringUniversity of VermontBurlingtonUSA
  2. 2.Department of Engineering & TechnologyNorwich UniversityNorthfieldUSA

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