Accelerometer-based system for the detection of lameness in horses

Area of Science:

• Equine biomechanics
• Veterinary orthopedics
• Animal locomotion analysis

Background:

• Video-based kinematic analysis is accurate for equine lameness detection but limited by camera field-of-view, requiring treadmill use.
• Existing methods rely on measuring vertical head and pelvic displacement and correlating limb foot movement.
• Treadmill constraints limit natural locomotion and field applicability of current gait analysis techniques.

Purpose of the Study:

• To describe and validate a novel accelerometer and gyroscope-based measurement system for equine lameness.
• To quantify forelimb and hindlimb lameness in horses without treadmill constraints.
• To assess the reliability of the new system for gait analysis both on a treadmill and overground.

Main Methods:

• Utilized 2 single-axis accelerometers and 2 gyroscopic transducers to measure vertical head/pelvic acceleration and limb foot movement.
• Converted acceleration data to displacement and quantified lameness using established algorithms.
• Correlated head/pelvic signals with limb gyroscopic signals to identify the affected limb; telemeterized data at 200 Hz.

Main Results:

• The accelerometer-based system successfully identified and quantified induced forelimb and hindlimb lameness in horses.
• Data demonstrated reliability of the system when horses trotted on a treadmill.
• The system also proved reliable for gait analysis of horses moving freely overground.

Conclusions:

• The developed accelerometer and gyroscope system provides a reliable and accurate method for equine lameness quantification.
• This technology liberates gait analysis from treadmill limitations, enabling field application.
• The system facilitates identification of affected limbs and quantification of lameness in horses under various conditions.