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Walterdebruyn et al: Effect of an Orthogonal Locking Plate and Primary Plate Working Length on Construct Stiffness and Plate Strain in an In vitro Fracture-Gap Model
Veterinary and Comparative Orthopedics and Traumatology 4, 2024

🔍 Key Findings Summary

  • Primary 3.5-mm LCP used with short (SWL), medium (MWL), and long (LWL) working lengths
  • Addition of orthogonal 2.7-mm LCP resulted in:
    • Significantly higher bending stiffness for SWL, MWL, and LWL (p < 0.0001)
    • Higher torsional stiffness for MWL and LWL (not for SWL)
    • Significantly lower strain across all working lengths in bending (p < 0.01)
  • Working length inversely related to construct stiffness and directly to plate strain
  • Orthogonal plates eliminated stiffness differences across working lengths in bending
  • Suggests orthogonal plates can improve implant fatigue life and allow compensation when short working lengths are unachievable

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