Effect of Arch Support Inserts on Ankle Eversion
Author Information
Author(s): Fong Daniel TP, Lam Mak-Ham, Lao Miko LM, Chan Chad WN, Yung Patrick SH, Fung Kwai-Yau, Lui Pauline PY, Chan Kai-Ming
Primary Institution: Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong
Hypothesis
This study investigates the effect of medial arch-heel support in inserts on reducing ankle eversion in standing, walking, and running.
Conclusion
Medial arch-heel support in inserts is effective in reducing ankle eversion in walking and running, but not in standing.
Supporting Evidence
- In walking, the inserts reduced maximum eversion by 2.1 degrees in normal subjects.
- In running, the insert with low medial arch support reduced maximum eversion angle by 3.6 degrees in normal subjects.
- 84% of pronators had their maximum eversion angle restored to normal range with the inserts.
Takeaway
Inserts with arch support help keep your feet from rolling too much when you walk or run, but they don't help when you're just standing still.
Methodology
The study involved 26 children who performed walking and running trials with different arch support conditions while their ankle eversion was measured using motion capture.
Potential Biases
Potential bias due to funding from a company that produces orthotic inserts.
Limitations
The study only included children and may not be generalizable to adults.
Participant Demographics
26 children, aged 6.9 ± 1.0 years, 15 males and 11 females.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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