Archives of orthopaedic and traumatic surgery

, Volume 99, Issue 4, pp 271–275 | Cite as

Effect of internal fixation on the strain environment of the canine femur

  • P. A. Manley
  • Joseph Schatzker
  • Geoffrey Sumner-Smith
Original Works
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Accepted:

Summary

Strain guage technology and telemetric transmission were utilized to investigate the dynamic strain patterns along the cortical surface of bone and the response to internal fixation, in vivo. Application of a tension band plate resulted in conversion of normal tensile strain into compressive strain which verified the tension band principle of internal fixation. Creation of a transverse osteotomy did not alter this response, provided that the fragments were rigidly fixed. The plate caused an appreciable decrease in normal surface strain measured from the lateral and medial cortices, illustrating the concept of stress protection.

Keywords

Internal Fixation Surface Strain Tension Band Strain Environment Appreciable Decrease 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Zusammenfassung

Belastungs-Meßtechnologie und telemetrische Übertragung wurden verwendet, um in vivo die dynamischen Belastungsmuster entlang der Oberfläche von Röhrenknochen und deren Änderung nach Osteosynthesen zu untersuchen. Die Verwendung einer Zuggurtungsplatte wandelte normale Zugbelastung in Druckbelastung um, was das Vorspannprinzip der Osteosynthese bestätigt. Eine Querosteotomie änderte these Reaktion nicht, vorausgesetzt, daß die Fragmente starr fixiert waren. Die Platte verursachte eine nennenswerte Verminderung der normalen, an der lateralen and medialen Corticalis gemessenen Oberflächenbelastung und veranschaulicht damit das Konzept der verminderten Beanspruchung des Knochens bei der Osteosynthese (stressprotection).

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Copyright information

© J. F. Bergmann Verlag 1982

Authors and Affiliations

  • P. A. Manley
    • 1
  • Joseph Schatzker
    • 2
  • Geoffrey Sumner-Smith
    • 3
  1. 1.Department of Clinical StudiesCollege of Veterinary Medicine and Biomedical SciencesFt. CollinsUSA
  2. 2.Staff Surgeon, Division of Orthopaedic Surgery, Wellesley HospitalUniversity of TorontoTorontoCanada
  3. 3.Ontario Veterinary CollegeUniversity of GuelphGuelphCanada

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