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Home / Equine Research Bank / Vet Surg / Ex vivo biomechanical evaluation of an adhered fiberglass an...
Veterinary surgery : VS2023; doi: 10.1111/vsu.14063

Ex vivo biomechanical evaluation of an adhered fiberglass and polymethyl methacrylate sole-hoof wall cast on stabilization of type III distal phalanx fractures under simulated physiologic midstance loads.

Abstract: To evaluate the effect of the application of a novel fiberglass-glue cast (FGC) on the fracture gap width in experimentally created type III distal phalanx fractures in cadaveric specimens under simulated physiologic loads. Methods: Ex vivo biomechanical laboratory study. Methods: Nine unilateral adult equine cadaver forelimbs. Methods: Type III distal phalanx fractures were created in forelimb specimens, which maintained distal components of the passive stay apparatus. The fracture gap was measured at 5%, 20%, 25%, 50%, 75%, and 95% of fracture length (palmar articular border to solar margin) using D65Pr-PaDiO radiographs. The limb was axially loaded (700, 3600, 4600, and 6700 N) before, during, and after removal of a woven fiberglass cloth and polymethyl methacrylate cast that encompassed the sole and distal portion of the hoof wall (FGC). Fracture gap widths were compared among loads and treatments using a mixed model ANOVA. Results: On average, under simulated physiological midstance loads, the fracture gap width was 0.2 mm smaller after FGC application, with the greatest decrease (0.5 mm) near the articular surface. On average, it was 0.3 mm smaller than after FGC removal. Fracture gap width was 0.1 mm greater when midstance loads transitioned from standing load to walking, trotting, and gallop loads. The fracture gap width increased by 1.3 mm with increasing distance from the articular surface. Conclusions: The FGC reduced the fracture gap width and prevented the fracture gap widening that occurred after FGC removal. Conclusions: The findings support consideration of FGC use in the treatment of horses with type III distal phalangeal fractures.
© 2023 The American College of Veterinary Surgeons.
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Publication Date: 2023-12-22 PubMed ID: 38135923DOI: 10.1111/vsu.14063Google Scholar: Lookup
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  • Journal Article

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

This study examines the impact of a new type of fiberglass-glue cast on the gap in experimental fractures in a horse’s distal phalanx under various simulated physiological loads. The cast was observed to reduce the fracture gap and prevent its widening when removed, indicating potential use in the treatment of such fractures in horses.

Methods and Procedure

  • The researchers employed ex vivo biomechanical laboratory study methods using nine unilateral adult equine cadaver forelimbs.
  • A type III distal phalanx fracture was artificially created in the forelimb specimens.
  • The fracture gap was gauged at several different percentages of fracture length, namely, 5%, 20%, 25%, 50%, 75%, and 95%.
  • The measuring technique used were D65Pr-PaDiO radiographs, a type of X-ray.
  • The limb was then axially loaded using four different weights – 700N, 3600N, 4600N and 6700N – before, during, and after the application and removal of the woven fiberglass and polymethyl methacrylate cast.
  • The change in fracture gap widths were compared among these different loads and treatments using a statistical analytical tool called mixed model ANOVA.

Findings

  • Under physiologically simulated midstance loads, the application of the fiberglass-glue cast resulted in a fracture gap that was narrower by an average of 0.2 mm. The maximum reduction in the gap (0.5 mm) was observed near the articular surface.
  • The fracture gap was narrower by 0.3 mm even after the removal of the cast compared to the fracture gap measurement before application.
  • The research noted that the fracture gap was 0.1 mm wider when the physiological load simulated transitioned from the weight a horse would bear when standing to that experienced during walking, trotting, or galloping.
  • It was also found that the fracture gap increased by 1.3 mm with increasing distance from the articular surface.

Conclusions

  • It was concluded that the fiberglass-glue cast (FGC) played a beneficial role in reducing the fracture gap and in preventing the widening of the gap after its removal.
  • The authors suggest the use of this FGC could be considered in treating type III distal phalangeal fractures in horses.

Cite This Article

APA
Westman S, Cullen TE, Bergstrom TC, Edwards LA, Garcia TC, Stover SM. (2023). Ex vivo biomechanical evaluation of an adhered fiberglass and polymethyl methacrylate sole-hoof wall cast on stabilization of type III distal phalanx fractures under simulated physiologic midstance loads. Vet Surg. https://doi.org/10.1111/vsu.14063

Publication

Veterinary surgery : VS
ISSN: 1532-950X
NlmUniqueID: 8113214
Country: United States
Language: English

Researcher Affiliations

Westman, Shane
  • William R. Prichard Veterinary Medical Teaching Hospital, University of California, Davis, Davis, California, USA.
Cullen, Thomas E
  • Equine Medical Center of Ocala, Ocala, Florida, USA.
Bergstrom, Thomas C
  • William R. Prichard Veterinary Medical Teaching Hospital, University of California, Davis, Davis, California, USA.
Edwards, Lisa A
  • Peterson Smith Equine Hospital, Ocala, Florida, USA.
Garcia, Tanya C
  • Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, California, USA.
Stover, Susan M
  • Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, California, USA.

Grant Funding

  • UC Davis Center for Equine Health

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