Systematic pain assessment in horses.
Authors: de Grauw J C, van Loon J P A M
Journal: Veterinary journal (London, England : 1997)
Summary
# Editorial Summary: Systematic Pain Assessment in Horses Reliable pain detection and measurement directly impacts clinical outcomes, yet horses cannot communicate their discomfort verbally, making objective assessment tools essential for practitioners across disciplines. De Grauw and van Loon's narrative review synthesises the evolving landscape of equine pain scales—encompassing visual analogue scales, numerical rating scales, composite scales and grimace scales—examining how each performs across distinct pain states including laminitis, lameness, acute synovitis, post-operative colic and castration recovery. Whilst each tool offers value, the review identifies significant variation in sensitivity, reliability and validation status, with particular concern around extrapolating results between different clinical pain conditions. For farriers, veterinarians and rehabilitation specialists, this means selecting assessment methods must account for the specific pathology being managed; a tool validated for post-surgical pain may not reliably detect chronic lameness-related discomfort. Moving forward, practitioners should adopt composite approaches combining behavioural, gait and physiological parameters rather than relying on single scales, whilst supporting continued refinement and cross-validation of existing tools to standardise pain recognition across equine practice.
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Practical Takeaways
- •Select pain assessment tools appropriate to your specific clinical situation (e.g., colic vs. lameness vs. post-surgical) rather than applying one universal scale, as tool performance varies by condition.
- •Understand that grimace scales and composite scales may provide more objective assessment than single-parameter scales, potentially improving pain management decisions in your practice.
- •Implement systematic, documented pain scoring to standardize pain recognition across your team and enable better tracking of analgesic effectiveness over time.
Key Findings
- •Multiple pain assessment tools have been developed for equine patients including visual analogue scales, simple descriptive scales, numerical rating scales, time budget analysis, composite scales, and grimace scales.
- •Each pain assessment tool has distinct strengths and weaknesses that affect clinical implementation and reliability across different equine pain states.
- •Pain assessment tool validity, sensitivity, and reliability vary significantly depending on the specific equine clinical condition being evaluated.
- •Systematic pain assessment tools enable objective monitoring of pain in equine patients, improving adequacy of pain management protocols.