An attempt to detect lameness in galloping horses by use of body-mounted inertial sensors.

This study explores the use of body-mounted inertial sensors to detect lameness in running horses, specifically thoroughbreds. The authors examine head, pelvis, and limb movement to understand if any changes in these areas correlate with induced lameness. The research showed that the asymmetry of motion in running horses stayed consistent regardless of the induced lameness.

Objective of the Study

• The aim of the study was to evaluate the movement of the head, pelvis, and legs of galloping horses to identify signs of lameness. The researchers intended to investigate the difference in stride patterns before and after the induction of lameness in the horses.

Methodology of the Study

• Twelve Thoroughbred horses were chosen for the study. The researchers used body-mounted inertial sensors to capture the movement data of horses galloping and trotting in a straight line.
• Lameness was artificially induced using sole pressure, and success was confirmed by measuring asymmetrical vertical movement of the head and pelvis when trotting.
• The researchers used a combination of paired-sample statistical analysis and neural network training to evaluate differences in gallop strides. Variables observed included vertical acceleration and rotation of the head and pelvis, limb contact intervals, stride durations, and limb lead preference.
• For statistical analysis, the median standardized gallop strides for each limb lead before and after lameness induction were calculated and assessed.

Findings of the Study

• The study found that measurements of head and pelvic acceleration, rotation, timing of limb actions, stride duration, and limb lead preference did not show a significant difference after lameness was induced in the forelimb or hind limb.
• Differences in limb leads before the induction of lameness were equal to or more prominent than differences within limb leads before and after lameness was induced.

Conclusions and Clinical Relevance

• This study concluded that asymmetry in motion in galloping horses, observed in the head, pelvic and limb motions between limb leads, remained consistent regardless of whether lameness had been induced.
• Overall, this indicates that the use of body-mounted inertial sensors to detect lameness in galloping horses through examining these specific variables may not provide significant results.