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Using a Crossline Laser to Predict Peak Plantar Pressure During Walking
Luke Donovan1, Danielle M Torp1, Abbey C Thomas-Fenwick1
1Department of Kinesiology, University of North Carolina at Charlotte.
Journal of Athletic Training
|June 6, 2020
Summary
A crossline laser can predict peak plantar pressure in the foot during walking for individuals with chronic ankle instability (CAI). This low-cost tool shows promise for clinical rehabilitation assessments.
Area of Science:
- Biomechanics
- Clinical Assessment
- Rehabilitation Technology
Background:
- Developing cost-effective tools is crucial for assessing ankle biomechanics in clinical settings.
- Improved assessment can enhance rehabilitation for patients suffering from chronic ankle instability (CAI).
Purpose of the Study:
- To investigate the predictive capability of a crossline laser for peak plantar pressure during walking.
- To evaluate a novel, low-cost method for quantifying ankle function.
Main Methods:
- A descriptive laboratory study was conducted with 25 participants diagnosed with CAI.
- Participants walked on a treadmill for 30 seconds with a crossline laser attached to their shoe.
- Simultaneous data collection included video recording of the laser projection and in-shoe plantar pressure measurements.
Main Results:
- Peak laser rotation during walking significantly predicted peak plantar pressure.
- The laser explained 57% of the variance in lateral midfoot pressure and 64% in lateral forefoot pressure.
Conclusions:
- A crossline laser system demonstrates potential as a valuable clinical tool.
- It can effectively predict lateral peak plantar pressure in CAI patients during gait analysis.

