Gait analysis using 3D accelerometry in horses sedated with xylazine

Area of Science:

• Veterinary Medicine
• Animal Biomechanics
• Pharmacology

Background:

• Assessing equine sedation effects on gait is crucial for welfare and safety.
• Objective quantification of movement changes is needed to complement subjective observations.
• Xylazine is a common sedative in horses, but its precise impact on gait parameters requires detailed analysis.

Purpose of the Study:

• To evaluate the efficacy and sensitivity of an accelerometric device in detecting and quantifying gait alterations in horses sedated with xylazine.
• To compare accelerometric data with baseline measurements before and at various time points after sedation.
• To determine which specific gait parameters are most affected by xylazine administration.

Main Methods:

• Six horses received intravenous xylazine or a control treatment in a crossover design.
• A triaxial accelerometric device was used to assess gait at multiple time points pre- and post-injection.
• Eight accelerometric parameters were calculated, including speed, stride frequency, stride length, regularity, and power distribution.

Main Results:

• Xylazine significantly decreased speed, stride frequency, dorsoventral power, propulsion power, and total power at multiple time points post-injection.
• Stride length remained unaffected, while regularity significantly decreased throughout the observation period.
• A redistribution of power was observed, with increased mediolateral power and decreased dorsoventral power shortly after xylazine administration.

Conclusions:

• Accelerometry provides a practical, accurate, and objective method for monitoring gait abnormalities in horses sedated with xylazine.
• The device effectively quantifies sedation-induced movement alterations, aiding in clinical assessment.
• This technology offers a portable and low-cost solution for gait analysis in equine practice.