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Research
Ana Paula Ribeiro
Universidade de São Paulo Faculdade de Medicina: Universidade de Sao Paulo Faculdade de Medicina
Corresponding Author
ORCiD: https://orcid.org/0000-0002-1061-3789
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This work is licensed under a CC BY 4.0 License. Read Full License
Purpose: To verify the effect of cavus and planus feet on plantar pressure during static posture in adolescents with idiopathic scoliosis (AIS).
Methods: Cross-sectional study. Sixty adolescents with idiopathic scoliosis (AIS) were evaluated and divided into three groups: normal foot (n=20), cavus foot (n=20), and planus foot (n=20). The scoliosis was confirmed by a spine X-ray exam (Cobb angle). The plantar arch index (AI) was calculated from the ratio between the midfoot area and the total area of the foot. Distribution plantar pressure data was collected using a plantar pressure system. The contact area, maximum force, and peak pressure were acquired over areas: forefoot, midfoot, and lateral and medial rearfoot.
Results: The Cobb angle of the AIS of the major curves averaged 33.7°±10.7°, the mean TK was 32.6°±6.7°, and the mean LL was 31.4°±8.3°. AIS with cavus feet showed a reduction in contact area and peak pressure on the midfoot and lateral rearfoot when compared to planus and normal feet, as well as maximum force on the midfoot and rearfoot (medial and lateral). Planus feet showed increased peak pressure and maximum force on the midfoot when compared to cavus and normal feet. Another observation was that planus feet also promoted an increase in peak pressure and maximum force on rearfoot in relation to cavus feet.
Conclusions: Foot posture influences plantar pressure of patients with AIS. Cavus feet decrease the plantar load on the midfoot and rearfoot while planus feet increased plantar pressure in these regions. Level of evidence: III
Keywords
idiopathic scoliosis, adolescents, foot, plantar arch, plantar pressure
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This is a preprint. It has not completed peer review.
Research
Ana Paula Ribeiro
Universidade de São Paulo Faculdade de Medicina: Universidade de Sao Paulo Faculdade de Medicina
Corresponding Author
ORCiD: https://orcid.org/0000-0002-1061-3789
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 15 Feb, 2021
No community comments so far
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Orthopedics
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Purpose: To verify the effect of cavus and planus feet on plantar pressure during static posture in adolescents with idiopathic scoliosis (AIS).
Methods: Cross-sectional study. Sixty adolescents with idiopathic scoliosis (AIS) were evaluated and divided into three groups: normal foot (n=20), cavus foot (n=20), and planus foot (n=20). The scoliosis was confirmed by a spine X-ray exam (Cobb angle). The plantar arch index (AI) was calculated from the ratio between the midfoot area and the total area of the foot. Distribution plantar pressure data was collected using a plantar pressure system. The contact area, maximum force, and peak pressure were acquired over areas: forefoot, midfoot, and lateral and medial rearfoot.
Results: The Cobb angle of the AIS of the major curves averaged 33.7°±10.7°, the mean TK was 32.6°±6.7°, and the mean LL was 31.4°±8.3°. AIS with cavus feet showed a reduction in contact area and peak pressure on the midfoot and lateral rearfoot when compared to planus and normal feet, as well as maximum force on the midfoot and rearfoot (medial and lateral). Planus feet showed increased peak pressure and maximum force on the midfoot when compared to cavus and normal feet. Another observation was that planus feet also promoted an increase in peak pressure and maximum force on rearfoot in relation to cavus feet.
Conclusions: Foot posture influences plantar pressure of patients with AIS. Cavus feet decrease the plantar load on the midfoot and rearfoot while planus feet increased plantar pressure in these regions. Level of evidence: III
Figure 1
Figure 2
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