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Biomechanical Evaluation of the Influence of an Intramedullary Pin on the Stability of a Feline Ilial Fracture Model Stabilized With a Bone Plate

Authors

  • Renee C. Krebs DVM, MS,

    1. Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
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  • Simon C. Roe BVSc, PhD, Diplomate ACVS,

    Corresponding author
    1. Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
    2. Center for Comparative Medicine and Translational Research, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
    • Corresponding Author

      Dr. Simon C. Roe, BVSc, PhD, Diplomate ACVS, NC State University College of Veterinary Medicine Veterinary Health Complex, Small Animal Orthopaedic Surgery, 1052 William Moore Drive, Raleigh, NC 27607. E-mail: simon_roe@ncsu.edu

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  • B. Duncan X. Lascelles BSc, BVSc, PhD, DSAS (ST), Diplomate ACVS & ECVS,

    1. Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
    2. Center for Comparative Medicine and Translational Research, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
    3. Comparative Pain Research Laboratories, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
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  • Denis J. Marcellin-Little DEDV, Diplomate ACVS, ECVS & ACVSMR,

    1. Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
    2. Center for Comparative Medicine and Translational Research, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
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  • Brian J. Trumpatori DVM, Diplomate ACVS,

    1. Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
    2. Veterinary Specialty Hospital of the Carolinas, Cary, North Carolina
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  • Gary Spodnick DVM, MS

    1. Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
    2. Veterinary Specialty Hospital of the Carolinas, Cary, North Carolina
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  • Work performed at the College of Veterinary Medicine and the College of Engineering, North Carolina State University.

Abstract

Objective

To compare the mechanical properties of feline ilial fractures stabilized with either a plate (P), or a plate and IM pin (P + P).

Study Design

Mechanical study.

Sample Population

Cadaveric cat pelvii (n = 10).

Methods

Feline ilial fractures (n = 20) stabilized with either P or P + P were subjected to 100 nondestructive load cycles, then loaded to failure. Deformation after cycling, yield load and displacement, stiffness and load at 2 mm of displacement were compared between groups.

Results

There were no significant differences between groups for any of the parameters. Variability of data was much larger for the P + P group.

Conclusions

No biomechanical advantage was demonstrated. The P + P constructs were not significantly stronger than plates alone in this acutely loaded cadaveric model.

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