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R. Mantelatto Andrade1,2, A. Vertu Schmidt Andrade2, C.E. Gonçalves Barsotti3, G.G. Guilhermino2, M.E. Callegari Ferreira2, S.M. Amado João1, A.P. Ribeiro4,1
1University of Sao Paulo, Sao Paulo, Brazil, 2Clinical Rehabilitation Center in Scoliosis, Campinas, Brazil, 3Member of the Spine Group, Hospital do Servidor Público Estadual (HSPE), Sao Paulo, Brazil, 4Orthopaedic Medicine Department, Health Science Post-Graduate, University Santo Amaro, Sao Paulo, Brazil
Background: Adolescent Idiopathic scoliosis (AIS) affects the spinal mobility and trunk balance. In AIS, walking analysis has shown a side-toside asymmetry of trunk and lower limb joint changes, which can change plantar pressure during static posture. This knowledge could help to better understand the body system changes associated with AIS.
Purpose: To verify the effect of the static posture on distribution plantar pressure in adolescents with AIS.
Methods: Observational cross-sectional study. This were divided into two groups: 50 adolescent idiopathic scoliosis (AIS group, age: 13.3±1.8 years, height: 153.8±8.2 cm, mass: 53.7±9.3 kg) and 50 healthy adolescents (Control group-CG, age: 13.6±1.7 years, height: 156.7±7.8 cm, mass: 52.0±9.7 kg). The scoliosis was confirmed by a spine two-dimensional radiography (XR) exam (Cobb angle). Static posture three trials were conducted using plantar pressure system. The contact area, maximum force, peak pressure and mean maximum pressure over four plantar areas: forefoot, midfoot and lateral and medial rearfoot were acquired. The t Student test were used for comparison between groups.
Results: The angle Cobb averaged 34.8°±10.0°. Static posture condition, showed a reduction the plantar pressure on midfoot areas in the AIS (p=0.002). An increase in plantar load directed to the peak pressure in the medial and lateral rearfoot (p=0.045) and the maximum force on the lateral rearfoot were observed in patients with AIS when compared to CG (p=0.001).
Conclusion(s): Static posture of the AIS resulted in increased plantar pressure on medial and lateral rearfoot and decreased on midfoot.
Implications: Improve foot support for adolescents with idiopathic scoliosis.
Funding, acknowledgements: We had no financial support.
Keywords: Scoliosis, Plantar Pressure
Topic: Musculoskeletal: spine
Did this work require ethics approval? Yes
Institution: University Santo Amaro, Sao Paulo, Brazil.
Committee: Research Ethics Committee of University Santo Amaro, Sao Paulo, Brazil.
Ethics number: 2729155
All authors, affiliations and abstracts have been published as submitted.
