Robustness of five different visual assessment methods for the evaluation of hindlimb lameness based on tubera coxarum movement in horses at the trot on a straight line.
Authors: Starke Sandra D, May Stephen A
Journal: Equine veterinary journal
Summary
# Editorial Summary Hindlimb lameness assessment in equine practice relies heavily on visual evaluation of pelvic movement, yet the reliability of different assessment methods has never been formally validated. Starke and May (2022) used a biomechanically modelled pelvis to simulate lameness ranging from sound to moderately lame (0–60% motion asymmetry), testing five different visual assessment approaches—including hip hike, hip drop, and range of motion comparisons—against sacroiliac-based motion asymmetry as a gold standard. No single assessment method proved robust across all lameness presentations and adaptive pelvic positions, though comparing the upward movement amplitude of each tuber coxae at specific phases of the stride (hip_hike_diff) performed most reliably in clinical scenarios. These findings suggest that relying on a single tubera coxarum-based assessment risks misdiagnosis; practitioners should therefore employ multiple visual evaluation methods concurrently to confirm lameness presence, localisation, and severity before proceeding to diagnostic imaging or other interventions.
Read the full abstract on PubMed
Practical Takeaways
- •Relying on a single tuber coxae movement observation method can lead to misdiagnosis—use Hip_hike_diff as your primary method but always cross-check with additional assessment techniques
- •Be aware that horses with hindlimb lameness may adopt compensatory pelvic movement patterns that can mask or alter typical lameness signs, requiring careful multi-method evaluation
- •Incorporate multiple tubera coxarum-based comparisons into your lameness assessment protocol to improve diagnostic confidence and accuracy in everyday practice
Key Findings
- •No single tubera coxarum-based visual assessment method was 100% robust across all lameness patterns and pelvic adaptations tested (0-60% motion asymmetry range)
- •Hip_hike_diff method (comparing upward movement amplitude of tuber coxae before ipsilateral hind foot contact) was identified as the most robust single visual assessment method for clinical practice
- •Tubera coxarum-based assessment was highly sensitive to different lameness patterns and changes in pelvic rotation, making it susceptible to misinterpretation
- •Using multiple visual assessment methods rather than a single method is recommended to substantiate clinical impressions and avoid incorrect clinical judgment