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Effect of Different Foot Orthosis Inverted Angles on Walking Kinematics in Females with Flexible Flatfeet
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Effect of Different Foot Orthosis Inverted Angles on Walking Kinematics in Females with Flexible Flatfeet
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Effect of Different Foot Orthosis Inverted Angles on Walking Kinematics in Females with Flexible Flatfeet
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Journal Article
Effect of Different Foot Orthosis Inverted Angles on Walking Kinematics in Females with Flexible Flatfeet
2023
Overview
Background: Although the inverted technique was shown to be more effective compared to other orthotic designs for the treatment of flatfeet, the biomechanical mechanisms underlying the therapeutic effect of the inverted angle orthoses is still unclear. Therefore, the aim of this study was to examine the effect of different inverted angles of foot orthoses on walking kinematics in females with flexible flatfeet. Methods: Thirty-one female adults with flexible flatfeet aged 18-35 years old participated in this study. Kinematic data of the hip, knee, and ankle were collected via BTS motion-capture system during walking under three test conditions in random order: with shoes only; with 15[degrees] inverted orthoses; and with 25[degrees] inverted orthoses. Results: Compared to the shoes only condition, both the 15[degrees] and 25[degrees] inverted orthotic conditions significantly decreased the maximum ankle plantarflexion angle during loading response, maximum ankle dorsiflexion angle during mid-stance, maximum ankle external rotation angle, and maximum ankle internal rotation angle. The maximum ankle plantarflexion angle at toe-off showed a significant decrease with the 25[degrees] inverted angle orthosis compared to both the 15[degrees] inverted angle and shoes only conditions. No significant differences were found in the knee kinematic variables, maximum hip extension angle, and maximum hip adduction angle between test conditions. Conclusion: Using inverted orthoses at 15[degrees] and 25[degrees] inverted angles resulted in significant changes in ankle joint kinematics during walking in female adults with flexible flatfeet. A 25[degrees] inverted angle orthosis significantly decreased ankle plantarflexion during push-off, potentially impacting gait mechanics. This suggests that a smaller inverted angle may be more effective for managing flexible flatfeet in female adults. Keywords: flatfoot, foot orthoses, gait analysis, walking
Publisher
Dove Medical Press Limited,Dove,Dove Medical Press
