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A new portable device for assessing locomotor performance.

M L'Hermette¹, X Savatier, L Baudry

¹CETAPS, EA 3832, University of Rouen, Rouen, France. maxime.lhermette@univ-rouen.fr

International Journal of Sports Medicine

|September 21, 2007

Summary

A new portable gait analysis system accurately measures pelvis kinematics, distinguishing normal from impaired gaits. This validated system offers objective, easy-to-use assessment for locomotor pathologies outside the lab.

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Area of Science:

Biomechanics
Orthopedics
Rehabilitation Engineering

Background:

Gait analysis is crucial for assessing locomotor pathologies.
Existing methods can be lab-bound and complex.
Objective and portable tools are needed for clinical use.

Purpose of the Study:

To validate a new portable system for gait analysis.
To assess the feasibility of using this system for clinical applications.
To evaluate the system's ability to differentiate between normal and impaired gait.

Main Methods:

A portable system (data logger, triaxial accelerometers, software) was developed.
Pelvis kinematics were measured during gait in 5 hip osteoarthritic and 15 healthy subjects.
Measurements were compared against a Vicon motion capture reference system.

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Main Results:

The portable system showed high correspondence with the reference system.
Differences in vertical sacrum amplitude, gait cycle time, and spine vertical trajectories were minimal.
Impaired gait demonstrated a distorted pelvis trajectory.

Conclusions:

The portable system is a valid and feasible tool for gait analysis.
It provides objective data for discriminating normal from limping gaits.
The system's portability allows for easy use outside the laboratory setting.