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Does postural stability differ between adolescents with idiopathic scoliosis and typically developed?: A systematic literature review and meta-analysis
Linköping University, Department of Medical and Health Sciences, Division of Physiotherapy. Linköping University, Faculty of Medicine and Health Sciences.ORCID iD: 0000-0002-3639-6380
Department of Clinical and Rehabilitation Services, Faculty of Health Science and Medicine, Bond Institute of Health and Sport, Bond University, Robina, Australia.
Department of Clinical and Rehabilitation Services, Faculty of Health Science and Medicine, Bond Institute of Health and Sport, Bond University, Robina, Australia.
Linköping University, Department of Medical and Health Sciences, Division of Physiotherapy. Linköping University, Faculty of Medicine and Health Sciences.
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2018 (English)In: Scoliosis and Spinal Disorders, ISSN 2397-1789, Vol. 13, no 1, article id 19Article, review/survey (Refereed) Published
Abstract [en]

Background

Postural stability deficits have been proposed to influence the onset and progression of adolescent idiopathic scoliosis (AIS). This study aimed to systematically identify, critically evaluate and meta-analyse studies assessing postural stability during unperturbed stance with posturography in AIS compared to typically developed adolescents.

Methods

Studies from four electronic databases (PubMed, Scopus, CINAHL, PEDro) were searched and case-control methodological quality assessed using a risk-of-bias assessment tool and a posturography methodological quality checklist. Pooled data regarding centre of pressure (COP) parameters such as sway area, Mediolateral (ML) and Anteroposterior (AP) position and range were compared for AIS and typically developed adolescents using Cohen’s d effect size (ES) and homogeneity estimates.

Results

Eighteen studies for quality analysis and 9 of these for meta-analysis were identified from 971 records. Risk-of-bias assessment identified 6 high, 10 moderate and 2 low risk-of-bias studies. The posturography methodological quality checklist identified 4 low, 7 moderate and 7 high-quality studies. Meta-analysis was performed for sway area whereas ML and AP are presented in three different meta-analyses due to divergent measurement units used in the studies: ML position 1 (MLP1), ML position 2 (MLP2) and ML range (MLR); AP position 1 (APP1), AP position 2 (APP2) and AP range (APR). Cohen’s d showed a medium ES difference in sway area 0.65, 95% CI (0.49–0.63), whereas ML showed no (MLP1, MLP2) and large (MLR) ES differences; MLP1 0.15, 95% CI (0.08–0.22); MLP2 0.14, 95% CI (0.08–0.19); and MLR 0.94, 95% CI (0.83–1.04). Cohen’s d for AP showed small ES (APP1) and large ES difference (APP2 and APR); APP1 0.43, 95% CI (0.31–0.54); APP2 0.85, 95% CI (0.72–0.97); and APR 0.98, 95% CI (0.87–1.09). Cochran’s Q and Higgins I2 showed homogeneity between studies.

Conclusions

There is moderate quality evidence for decreased postural stability in AIS measured as COP parameters sway area, ML and AP range with a positional shift posteriorly in the sagittal plane. The findings support studying postural stability in early stage AIS and also prospectively identify cause and effect of the curvature as well as effectiveness of postural control interventions in the prevention of scoliosis progression.

Place, publisher, year, edition, pages
2018. Vol. 13, no 1, article id 19
Keywords [en]
Adolescent idiopathic scoliosis, Postural balance, Postural control, Postural stability, Posturography, Force plate, Centre of pressure, Sway area, Anteroposterior, Mediolateral
National Category
Physiotherapy
Identifiers
URN: urn:nbn:se:liu:diva-152577DOI: 10.1186/s13013-018-0163-1OAI: oai:DiVA.org:liu-152577DiVA, id: diva2:1261723
Available from: 2018-11-08 Created: 2018-11-08 Last updated: 2019-04-17

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Dufvenberg, MarleneÖberg, BirgittaAbbott, Allan

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