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Updated: Sep 29, 2025

3D Kinematic Gait Analysis for Preclinical Studies in Rodents
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Four-limb wireless IMU sensor system for automatic gait detection in canines.

Xiqiao Zhang1,2, Gregory J Jenkins1,2, Chady H Hakim1

  • 1Department of Molecular Microbiology and Immunology, School of Medicine, University of Missouri, One Hospital Dr., Columbia, MO, 65212, USA.

Scientific Reports
|March 22, 2022
PubMed
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A new 4-limb canine gait analysis system using wireless inertial measurement units (IMUs) provides accurate stride parameter measurements. This low-cost tool aids veterinary and translational research for canine mobility studies.

Area of Science:

  • Biomechanical Engineering
  • Veterinary Medicine
  • Animal Locomotion Analysis

Background:

  • Accurate canine gait analysis is crucial for diagnosing neuromuscular diseases and evaluating treatment efficacy.
  • Existing gait analysis systems can be expensive, complex, or lack portability for widespread use.
  • Wireless inertial measurement units (IMUs) offer a potential solution for accessible and objective gait assessment.

Purpose of the Study:

  • To develop and validate a novel 4-limb canine gait analysis system utilizing wireless IMUs.
  • To create reliable methods for sensor attachment and signal processing for canine locomotion.
  • To compare the accuracy of the IMU-based system against a gold-standard pressure-sensor walkway system.

Main Methods:

  • Designed and 3D printed custom holders for consistent and rapid mounting of IMUs on all four limbs.

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  • Developed signal analysis algorithms to precisely identify key gait events like swing start and end.
  • Conducted synchronized measurements on four dogs using both the developed IMU system and a pressure-sensor walkway system.

    • Main Results:

    • High correlation was observed between stride parameters measured by the IMU system and the pressure-sensor system.
    • Bland-Altman analysis indicated minimal mean measurement bias between the two systems for both forelimbs and hindlimbs.
    • Over 92% of forelimb data points showed less than 10% disagreement, demonstrating high accuracy.

    Conclusions:

    • The developed 4-limb IMU system is an effective and low-cost tool for canine gait analysis.
    • The system accurately quantifies stride parameters and can visualize gait types and changes.
    • This technology holds significant promise for veterinary clinical applications and translational research in canine models of disease.