Mechanical Evaluation of Two Canine Iliac Fracture Fixation SysteMS
Article first published online: 29 FEB 2008
Volume 17, Issue 6, pages 321–327, November 1988
How to Cite
VANGUNDY, T. E., HULSE, D. A., NELSON, J. K. and BOOTHE, H. W. (1988), Mechanical Evaluation of Two Canine Iliac Fracture Fixation SysteMS. Veterinary Surgery, 17: 321–327. doi: 10.1111/j.1532-950X.1988.tb01026.x
- Issue published online: 29 FEB 2008
- Article first published online: 29 FEB 2008
Twenty-three canine pelves were tested bilaterally to determine the stiffness and strength of intact ilium and stabilized oblique iliac osteotomies that simulated a common clinical fracture. Fixation systeMS tested were three 4.0 mm cancellous screws inserted ventral to dorsal across the osteotomy site and one laterally placed five hole 3.5 mm dynamic compression plate. Specimens were mechanically tested to failure under torsional, axial, or axial plus bending loads. Lag screw fixation was stiffer and stronger than plate fixation in all testing modes. The differences were statistically significant (p <.05) in the torsional and axial plus bending loading modes. Fatigue testing was performed on implanted specimens with low-level cyclic loading under axial plus bending loading conditions. Physiologic loading conditions failed to produce mechanical failure of either fixation system after 100,000 cycles.