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Paulick et al: Ex vivo comparison of lateral plate repairs of experimental oblique ilial fractures in cats
Veterinary Surgery 1, 2022

🔍 Key Findings

  • Locking plates (except ALPS-5) withstood significantly more cycles before failure than nonlocking DCP constructs.
  • ALPS-6.5, LCP, and FIXIN plates endured higher loads and resisted displacement better than DCP and ALPS-5.
  • ALPS-5 plates showed lower bending stiffness than all other constructs (P < .05).
  • DCP constructs failed due to screw loosening, seen in all specimens.
  • Locking constructs failed by bone slicing, affecting 100% of specimens.
  • Catastrophic implant failure (fracture or plastic deformation) occurred only in ALPS-5 group.
  • Plate size and screw-plate interface both influence resistance to cyclic loading in feline ilial fracture repair.
  • Locking plates are preferable for reducing screw pullout, but plate strength (e.g., cross-section) must match loading forces.

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← Articles

Paulick et al: Ex vivo comparison of lateral plate repairs of experimental oblique ilial fractures in cats
Veterinary Surgery 1, 2022

🔍 Key Findings

  • Locking plates (except ALPS-5) withstood significantly more cycles before failure than nonlocking DCP constructs.
  • ALPS-6.5, LCP, and FIXIN plates endured higher loads and resisted displacement better than DCP and ALPS-5.
  • ALPS-5 plates showed lower bending stiffness than all other constructs (P < .05).
  • DCP constructs failed due to screw loosening, seen in all specimens.
  • Locking constructs failed by bone slicing, affecting 100% of specimens.
  • Catastrophic implant failure (fracture or plastic deformation) occurred only in ALPS-5 group.
  • Plate size and screw-plate interface both influence resistance to cyclic loading in feline ilial fracture repair.
  • Locking plates are preferable for reducing screw pullout, but plate strength (e.g., cross-section) must match loading forces.

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Multiple Choice Questions on this study

In Paulick 2022 et al., on feline ilial plating, which of the following statements best describes the failure mode observed in **locking plate constructs**?

A. Screw loosening was common in sacral screws
B. Bone slicing occurred in all specimens
C. Implants failed by corrosion
D. Catastrophic screw pull-out was seen in 50%
E. Loosening was rare in locking plates

Answer: Bone slicing occurred in all specimens

Explanation: Locking constructs consistently failed via bone slicing, not screw loosening.
In Paulick 2022 et al., on feline ilial plating, which failure mode occurred in **100% of specimens** using **nonlocking DCP plates**?

A. Implant fracture
B. Plastic deformation
C. Bone slicing
D. Screw loosening
E. Plate bending

Answer: Screw loosening

Explanation: DCP constructs consistently failed by screw loosening, unlike locking plates.
In Paulick 2022 et al., on feline ilial plating, which implant system demonstrated the **lowest bending stiffness** under cyclic loading?

A. ALPS-6.5
B. FIXIN
C. DCP
D. ALPS-5
E. LCP

Answer: ALPS-5

Explanation: ALPS-5 constructs had significantly lower stiffness than all other groups.
In Paulick 2022 et al., on feline ilial plating, what factor most contributed to the **poor performance** of the ALPS-5 system despite it being a locking plate?

A. Incorrect torque application
B. Improper screw insertion
C. Too many empty screw holes
D. Small cross-section of the plate
E. Inferior screw thread design

Answer: Small cross-section of the plate

Explanation: ALPS-5 failed more often due to its reduced moment of inertia, despite angular stability.
In Paulick 2022 et al., on feline ilial plating, which implant groups endured **more cycles** and **greater load** before displacement compared to DCP?

A. ALPS-5 and FIXIN
B. FIXIN and LCP
C. LCP and ALPS-5
D. ALPS-6.5 and ALPS-5
E. DCP and FIXIN

Answer: FIXIN and LCP

Explanation: Only FIXIN and LCP showed statistically superior performance over DCP in load cycles before displacement.

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