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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.
Context:
Developing low-cost assessment tools to quantify ankle biomechanics in a clinical setting may improve rehabilitation for patients with chronic ankle instability (CAI).
Objective:
To determine whether a crossline laser can predict peak plantar pressure during walking.
Design:
Descriptive laboratory study.
Setting:
Laboratory.
Patients Or Other Participants:
Twenty-five participants with CAI (9 men, 16 women; age = 20.8 ± 2.3 years, height = 170.4 ± 10.4 cm, mass = 78.9 ± 22.4 kg).
Intervention(S):
Participants completed 30 seconds of treadmill walking with a crossline laser fixed to their shoe while, simultaneously, a video camera recorded the laser projection on the wall and an in-shoe plantar-pressure system measured plantar pressure.
Main Outcome Measure(S):
Peak laser rotation and peak plantar pressure of the lateral midfoot and forefoot.
Results:
With respect to peak plantar pressure, peak rotation of the laser during walking explained 57% of the variance in the lateral midfoot and 64% in the lateral forefoot.
Conclusions:
The crossline laser may be a valuable clinical tool for predicting lateral peak plantar pressure in patients with CAI during walking.
