External characteristics of the lateral aspect of the hoof differ between non-lame and lame horses.
Authors: Dyson, Tranquille, Collins, Parkin, Murray
Journal: Veterinary journal (London, England : 1997)
Summary
# Editorial Summary Dyson and colleagues examined external hoof characteristics in 300 lame and 25 non-lame horses to establish which morphological features reliably distinguish horses with foot pain from sound individuals—a distinction crucial for pre-purchase examinations where practitioners must assess lameness risk from static hoof conformation alone. Using standardised photography and analysis, they measured angular parameters (hoof wall, heel and coronary band angles) alongside linear ratios and capsule characteristics, identifying that whilst mean angles were larger in lame feet, only the ratio of dorsal to palmar coronary band heights and overall coronary band shape showed statistically significant differences between groups. Chronicity of lameness was indicated by divergent growth rings and non-parallel horn tubules, suggesting episodes exceeding three months duration. In clinical practice, an asymmetrically increased dorsal-to-palmar coronary band height ratio between limbs warrants particular attention as a marker of previous foot pain, whilst abnormal growth ring patterns and altered horn tubule orientation suggest more longstanding pathology rather than acute problems. These findings provide evidence-based morphological indicators to refine pre-purchase risk assessment and guide farriers and veterinarians in interpreting static hoof conformation findings within their broader diagnostic context.
Read the full abstract on PubMed
Practical Takeaways
- •At PPE, measure the ratio of dorsal to palmar coronary band heights—asymmetrical ratios between limbs suggest prior lameness in the affected foot
- •Observe coronary band shape and growth ring patterns: divergent growth rings and non-parallel horn tubules indicate chronic (>3 months) lameness history
- •While angular measurements differ between lame and non-lame feet, only coronary band geometry reliably distinguishes these groups clinically
Key Findings
- •Mean hoof wall, heel and coronary band angles were significantly larger in lame compared with non-lame feet
- •Only the ratio of dorsal to palmar coronary band heights and coronary band shape were significantly different between lame and non-lame horses
- •Divergent growth rings and non-parallel horn tubules were associated with lameness duration >3 months
- •Increased dorsal to palmar coronary band height ratio in one limb may indicate previous lameness in that foot at pre-purchase examination