Changes in pressure distribution of the solar surface after a single trimming event are associated with external hoof measurements in the equine fore foot.
Authors: Seery Sarah, Gardiner James, Bates Karl T, Pinchbeck Gina, Clegg Pete, Ireland Joanne L, Milner Peter I
Journal: Equine veterinary journal
Summary
# Editorial Summary Whilst trimming is universally recognised as essential for hoof health, the biomechanical consequences of a single trimming event remain poorly characterised. This cross-sectional study of 94 fore feet from 50 sound horses used pressure mapping technology to quantify changes in solar surface loading immediately after trimming, then correlated these pressure changes with 18 external hoof measurements taken before and after the procedure. A modest but significant proportion of feet (13%) demonstrated increased pressure concentrated in the frog region post-trimming, and the authors identified four morphometric factors associated with this response: reduced bearing border length, increased distance from heel buttress to centre of pressure, increased lateral heel angle, and decreased medial heel length. The predictive model showed excellent discrimination (AUROC 0.94), suggesting that farriers could theoretically identify which hoof conformations are predisposed to pressure redistribution toward the frog following trimming. For practitioners, these findings indicate that specific hoof dimensions warrant particular attention during assessment—particularly the symmetry and length of heel structures and the position of the pressure centre—as these may influence whether a trim results in beneficial or potentially problematic loading patterns in the frog.
Read the full abstract on PubMed
Practical Takeaways
- •Monitor specific hoof measurements (bearing border length, heel angle, heel buttress position) as these directly influence pressure distribution changes after trimming
- •Be aware that approximately 1 in 8 horses will show increased frog loading post-trim; horses with certain hoof conformations may be at higher risk
- •Use external hoof assessment to identify which horses are likely to respond differently to trimming, allowing for more tailored farriery approaches
Key Findings
- •Trimming resulted in significant pressure increase in the frog region in 13% (12/94) of fore feet
- •Bearing border length, heel buttress to centre of pressure distance, lateral heel angle, and medial heel length were independently associated with increased frog pressure after trimming
- •The predictive model for increased frog pressure showed excellent specificity (98%) but only fair sensitivity (58%)
- •External hoof measurements can predict which feet will experience increased frog loading following a trimming event