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Changes in foot function with the use of Root and Blake orthoses
1School of Public Health, Queensland University of Technology, Kelvin Grove, Queensland 4059, Australia.
Journal of the American Podiatric Medical Association
|April 25, 2001
Summary
This study found that rigid foot orthoses significantly alter gait temporal parameters, including stance phase duration and loading initiation. Both Root- and Blake-style orthoses showed similar effects on plantar pressure measurements.
Area of Science:
- Biomechanics
- Podiatry
- Orthotics
Background:
- Foot orthoses are commonly used to manage various lower limb conditions.
- Understanding the biomechanical effects of different orthotic designs is crucial for effective treatment.
- Rigid foot orthoses are prescribed to control foot motion and improve plantar pressure distribution.
Purpose of the Study:
- To compare the effects of two rigid foot orthosis designs (modified Root and Blake styles) on plantar pressure measurements.
- To identify differences in gait parameters between the two orthosis designs.
Main Methods:
- Twenty-seven subjects participated in the study.
- Plantar pressure was measured using the Electrodynogram (EDG) in-shoe pressure measurement system.
- Reliability of the EDG system was assessed.
Main Results:
- Significant alterations in temporal gait parameters were observed with orthosis use.
- The duration of certain stance phase components changed.
- Loading initiation under the medial forefoot was delayed.
- A reduction in total loading duration at the heel and forefoot was noted.
- The two orthosis designs exhibited similar effects, with minor differences.
Conclusions:
- Rigid foot orthoses, specifically modified Root and Blake styles, significantly impact gait dynamics.
- These orthoses alter plantar pressure distribution and temporal aspects of the stance phase.
- The observed effects suggest a potential for these orthoses in modifying foot loading patterns.