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Clinical-oriented Three-dimensional Gait Analysis Method for Evaluating Gait Disorder
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Accuracy, Validity, and Reliability of Markerless Camera-Based 3D Motion Capture Systems versus Marker-Based 3D
Sofia Scataglini1, Eveline Abts1, Cas Van Bocxlaer1
14D4ALL Laboratory, Department of Rehabilitation Sciences and Physiotherapy, Center for Health and Technology (CHaT), Faculty of Medicine and Health Sciences, University of Antwerp, 2000 Antwerpen, Belgium.
Sensors (Basel, Switzerland)
|June 19, 2024
Summary
Markerless camera-based 3D motion capture systems (MCBS) show accuracy comparable to marker-based systems (MBS) for spatiotemporal gait parameters. Hip and knee kinematics are also reliable, but ankle and other planes need further research.
Area of Science:
- Biomechanics
- Gait Analysis
- Motion Capture Technology
Background:
- Marker-based 3D motion capture systems (MBS) are the standard for gait analysis but have limitations.
- Markerless camera-based 3D motion capture systems (MCBS) offer a potential solution to MBS limitations.
Purpose of the Study:
- To systematically review and compare the accuracy, validity, and reliability of MCBS against MBS.
- To assess the performance of different gait parameters captured by both systems.
Main Methods:
- Systematic literature search of 2047 papers across Pubmed and Web of Science databases.
- Inclusion of 22 papers after full-text screening, assessed using COSMIN and EBRO guidelines for bias and evidence levels.
- Meta-analysis conducted on specific spatiotemporal and kinematic parameters.
Main Results:
- Spatiotemporal parameters demonstrated good to excellent accuracy, validity, and reliability for MCBS compared to MBS.
- Hip and knee kinematic variables showed moderate to excellent agreement, while ankle joint measurements had poor validity and reliability.
- Walking speed accuracy and validity were excellent, with minimal bias; meta-analysis showed good-to-excellent ICC for walking speed, step time, and step length.
Conclusions:
- MCBS are a viable alternative to MBS for accurate and reliable spatiotemporal gait analysis.
- Kinematic analysis is most reliable for hip and knee in the sagittal plane; transverse and frontal planes require further investigation.
- Standardization of methodological procedures is crucial for future MCBS research in clinical settings and diverse patient populations.
