Objective gait analysis methods for assessing movement asymmetry in the equine patient.

Objective gait analysis aids mild/multilimb lameness assessment; use with subjective evaluation.

This technical tutorial reviews objective gait analysis methods for evaluating movement asymmetry in equine patients. Two primary technologies are compared: inertial measurement unit (IMU) systems and camera-based systems. IMU systems provide excellent repeatability and function reliably in various environmental conditions, enabling objective assessment of lameness changes following flexion tests and local analgesia. However, they require precise sensor placement and wireless connectivity setup, which is time-consuming. Camera-based systems offer faster setup, lower cost, and portability, with the advantage of analyzing owner-recorded videos. Their limitations include increased sensitivity to environmental conditions and frequent need for multiple trot-ups. The study notes that α-2 agonists can mask forelimb lameness but have minimal effects on hind limb lameness, while tranquilizers generally do not interfere with gait analysis. Both methods may show inaccuracies, particularly in mild hind limb lameness cases and with improper sensor placement. The authors conclude that objective gait analysis serves as a valuable diagnostic aid for assessing mild or multilimb lameness and should complement, not replace, subjective clinical lameness evaluation.

This summary was distilled by AI and may occasionally misinterpret data. Confirm critical details with the primary literature before clinical application.