Dynamic testing of horseshoe designs at impact on synthetic and dirt Thoroughbred racetrack materials.
Authors: Mahaffey C A, Peterson M L, Thomason J J, McIlwraith C W
Journal: Equine veterinary journal
Summary
# Editorial Summary: Dynamic Testing of Horseshoe Designs at Impact Mahaffey and colleagues used a biomechanical surface tester to compare three common aluminium racing plate designs—a flat plate, serrated V-Grip, and a shoe with toe grabs and heel calks—on both synthetic and dirt racetrack surfaces under controlled laboratory conditions replicating realistic temperature and moisture profiles. Peak vertical and shear loads, along with loading rates in both the vertical and craniocaudal (fore-aft) directions, were measured during simulated hoof impact, revealing that shoe design had minimal influence on most loading parameters, with the notable exception of reduced craniocaudal loading rates for the V-Grip on synthetic surfaces. The differences attributable to track surface material substantially outweighed any effects from shoeing; even the V-Grip's modest reduction in fore-aft loading rates on synthetic tracks was considerably smaller than the variation between dirt and synthetic materials themselves. This finding fundamentally shifts the emphasis in racetrack management: whilst farriers and trainers often prioritise shoe selection to manage impact dynamics, the surface composition and preparation emerge as far more influential factors in determining loading patterns during the stance phase of gallop. For equine professionals working with racehorses, this underscores the importance of collaborative attention to track maintenance and surface engineering as primary injury-prevention strategies, rather than relying on shoeing alone to mitigate loading concerns.
Read the full abstract on PubMed
Practical Takeaways
- •Horseshoe design has minimal effect on loading forces during galloping — prioritize track surface preparation and material selection over shoe changes to modify impact dynamics
- •The V-Grip shoe may offer marginal benefits on synthetic tracks with specific wax/oil profiles, but this advantage is smaller than switching between surface types
- •Focus on footing quality rather than shoeing modifications as the primary intervention to manage loading and reduce injury risk in racehorses
Key Findings
- •Maximum vertical and shear loads and loading rates were not significantly different between the three shoe designs tested, except for reduced craniocaudal loading rate with V-Grip on synthetic surface
- •Surface material had significantly greater effect on dynamic loading than shoe design
- •V-Grip shoe reduction in load rates on synthetic surfaces was less than differences found between material types
- •Track surface material and preparation have greater impact on impact-phase loading than shoeing design