Archives of orthopaedic and traumatic surgery

, Volume 99, Issue 3, pp 213–216 | Cite as

Evaluation of tension and compression forces in the canine femur in vivo

  • Paul A. Manley
  • Joseph Schatzker
  • Geoffrey Sumner-Smith
Original Works

Summary

In order to verify the existence of tension and compression forces from the cortical surface of canine femora, rosette strain gauges and a radio telemetry system were used to observe the animals during normal locomotion. Surface strain measured from the lateral cortical surface was consistently in tension whereas surface strain measured from the medical cortical surface was in compression. This data supported in vitro work which showed that eccentric loading of bone results in the convex side of bone being in tension and the concave side of bone being in compression.

Zusammenfassung

Spannungs- und Druckkräfte auf der kortikalen Oberfläche des Femurs beim Hund wurden geprüft. Um die Verhältnisse beim freien Bewegungsablauf beobachten zu können, wurden Rosetten-Belastungsmeßgeräte und ein drahtloses Telemetriesystem verwendet. Die abgeleiteten Belastungsmessungen ergaben, daß die laterale Kortexoberfläche regelmdßig unter Spannung stand, während die mediale Kortexoberfläche unter Druck stand. Dieses Ergebnis bestätigt das in vitro Resultat, welches zeigte, daß exzentrisches Belasten von Knochen zu Spannung in der konvexen Seite und Druck in der konkaven Seite des Knochens führt.

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Copyright information

© J. F. Bergmann Verlag 1982

Authors and Affiliations

  • Paul A. Manley
    • 1
  • Joseph Schatzker
    • 2
  • Geoffrey Sumner-Smith
    • 1
  1. 1.Ontario Veterinary CollegeUniversity of GuelphGuelphCanada
  2. 2.Staff Surgeon, Division of Orthopaedic Surgery, The Wellesley HospitalUniversity of TorontoTorontoCanada
  3. 3.Veterinary Teaching HospitalColorado State UniversityFt. CollinsUSA

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