Towards a postural indicator of back pain in horses (Equus caballus).
Authors: Lesimple Clémence, Fureix Carole, De Margerie Emmanuel, Sénèque Emilie, Menguy Hervé, Hausberger Martine
Journal: PloS one
Summary
# Editorial Summary Chronic back pain in horses often goes undetected until significant dysfunction develops, yet practitioners currently lack objective field-based assessment tools. Lesimple and colleagues examined whether observable postural indicators—specifically neck roundness and surface electromyography (sEMG) activity along the spine—could reliably indicate back pathology in 18 horses from two contrasting management systems (leisure horses in social turnout versus riding school horses in individual boxes). Manual palpation by an experienced practitioner correlated strongly with sEMG measurements across all spinal sites, and importantly, neck posture showed marked correlation with both localised cervical muscular activity and whole-spine sEMG patterns, demonstrating the integrated mechanical function of the equine back. Riding school horses exhibited significantly higher sEMG measures, more concave neck postures, and poorer manual spinal evaluations compared to leisure horses, suggesting that daily ridden work with constraining techniques produces measurable postural and neuromuscular changes. For practitioners in the field, neck roundness offers a readily assessable visual indicator of spinal health status, whilst sEMG measurement—though requiring equipment—provides quantifiable validation of clinically suspected back dysfunction, substantially improving welfare assessment and potentially guiding early intervention strategies.
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Practical Takeaways
- •Monitor neck posture (roundness vs. concavity) as a simple visual indicator of back health in your horses; concave necks suggest muscular tension and dysfunction
- •Horses kept in individual boxes with intensive riding show more signs of back dysfunction than those in social group settings with relaxed work — management and training intensity matter for spinal health
- •Manual palpation by an experienced practitioner correlates well with objective sEMG findings, validating skilled hands-on assessment as a practical diagnostic tool in field conditions
Key Findings
- •Manual examination of the spine correlated strongly with surface electromyography (sEMG) measurements in detecting back problems
- •Horses with concave neck postures showed significantly higher sEMG activity at cervical and thoracolumbar sites compared to horses with rounder necks
- •Leisure horses exhibited rounder necks, lower sEMG measures, and sounder spines than riding school horses managed in individual boxes
- •Neck roundness and sEMG measurements are reliable, field-assessable indicators of spinal dysfunction that reflect management and riding technique effects