Quantitative lameness assessment in horses by using an accelerometer-based simple device: A preliminary study.

This research study explores the possibility of using a self-constructed device, the Lameness Detector 0.1, as a cost-effective tool to help objectively diagnose lameness in horses. The study tested this device on 42 adult sport horses with a specific type of hindleg lameness, and the data collected showed that this device could be a reliable complement to traditional gait analysis.

Introduction to the research paper

• The study begins with acknowledging the global tech advancements and their influence on equine lameness diagnostics. Traditional gait evaluations, which used to be purely based on observation and subjective assessment, have now started being supported by innovative tech solutions for more accurate results.

Objective of the study

• The primary goal of this study was to see if traditional gait assessments could be further improved by implementing quantitative measurements. This was done using a cost-effective, self-built device called the Lameness Detector 0.1, equipped with inertial motion sensors.

Methodology

• The study involved 42 adult sport horses, all diagnosed with hindleg lameness due to a condition called osteochondritis dissecans. Their conditions were assessed pre- and post-intra-articular anesthesia using both the standard subjective evaluation and the Lameness Detector 0.1.
• Data was gathered by recording electric impulses from the device’s accelerometer across three axes. Statistical comparison was done on pre- and post-anesthesia joint block values, categorized by degree of lameness, to study the correlation between quantitative measurements and subjective evaluations.

Results of the study

• The analysis revealed significant differences in the y-axis values between pre- and post-joint block evaluations. There was a decrease in impulse counts post-anesthesia block.
• In horses scoring 2/5 and 3/5 on the American Association of Equine Practitioners (AAEP) lameness scale, y-axis data showed significant changes. Here, the impulse numbers rose as the lameness scores decreased.
• However, the z-axis data didn’t show high specificity.
• Overall, the average y-axis impulse counts strongly correlated with the subjective lameness scores, revealing that the Lameness Detector 0.1 can accurately reflect a horse’s degree of lameness.

Conclusion

• In conclusion, the study suggests that Lameness Detector 0.1 can be a reliable, cost-effective instrument to complement traditional subjective gait analyses. The y-axis impulses in particular, showed a promising positive correlation with the traditional lameness scores, hinting at the potential of employing this device for improved precision in diagnosing equine lameness.