Radiographic Morphometric Measurements of the Donkey's Distal Hind Limb.

Summary

# Editorial Summary: Radiographic Morphometric Measurements of the Donkey's Distal Hind Limb Whilst radiographic reference values for equine hoof anatomy are well established, donkeys present sufficiently distinct morphological characteristics to necessitate their own normative database—a gap this 2024 study addresses. Researchers obtained standardised radiographs of the distal hind limb in 41 clinically sound donkeys, measuring 16 linear distances and 9 angles per hoof following consistent preparation and trimming protocols. Key findings revealed that donkey dorsal hoof walls average 70–80 mm in length at a 55° angle (parallel to the coffin bone), with mean sole thickness of 14 mm and founder distance of 17 mm, whilst the heel angle averaged 52°—slightly shallower than the hoof wall. Significant correlations emerged between these measurements and individual donkey weight and height, indicating that breed and size variation requires consideration when interpreting radiographs. For practitioners, these reference values provide objective diagnostic criteria for detecting pathological changes and evidence-based parameters to guide therapeutic trimming, moving beyond extrapolation from equine standards that may not reflect donkey anatomy.

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Key Findings

• •Donkey dorsal hoof wall averages 70–80 mm in length at 55° angle, differing significantly from horse anatomy
• •Mean founder distance is 17 mm and sole thickness is 14 mm in sound donkeys
• •Heel angle averages 52°, approximately 3° flatter than the hoof wall angle
• •Significant correlations exist between morphometric measurements and donkey weight and height

Conditions Studied

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