Affordable Access

Rigidity and stress analyses of external fracture fixation devices--a theoretical approach.

Authors
  • Chao, E Y
  • Kasman, R A
  • An, K N
Type
Published Article
Journal
Journal of Biomechanics
Publisher
Elsevier
Publication Date
Jan 01, 1982
Volume
15
Issue
12
Pages
971–983
Identifiers
PMID: 7166557
Source
Medline
License
Unknown

Abstract

The rigidity and stresses in external fracture fixation devices were studied by means of the finite element method. Different geometries and material parameters were simulated using a beam element model. Axial, bending and torsional loads were applied through the bone ends and the displacement obtained at the fracture sites was used to calculate the fracture fixation stiffness. The key parameters which increased fixation rigidity were identified. High pin stresses were predicted under certain application conditions. Possible clinical implications for the use of such apparatus are discussed in the light of bone fracture healing. The present results are expected to have a significant impact on future design modifications and clinical applications of this popular instrument in orthopedic surgery and traumatology.

Report this publication

Statistics

Seen <100 times