Article

Previous reports on changes in postural control in adolescent idiopathic
scoliosis (AIS) compared to healthy controls have been inconsistent. This may
suggest center of pressure (COP) sway parameters are not sufficient for
determining the ability to maintain quiet upright stance indicating more complex
measures may be needed to examine postural control in AIS. The purpose of this
investigation was to compare postural control between AIS of different severity
levels and healthy controls using time-to-contact (TtC), the complexity index of
multiscale entropy (C(r)), and COP sway parameters. Thirty-six AIS patients were
classified as pre-bracing or pre-operative and compared to 10 healthy control
subjects. Overall, the AIS patients showed significantly greater COP sway in
mediolateral direction, but deficits with respect to the anteroposterior
direction were only systematically identified with the time-to-contact and entropy measures.
The multiscale entropy (C(r)) results indicate that those with
AIS utilize a different control strategy from healthy controls in the
mediolateral direction that is more constrained, less complex and less adaptable.
AIS severity further reduced this adaptability in the anteroposterior direction.
These results indicate it is necessary to examine both planes of motion when
investigating postural control in AIS. Additionally, the application of the
measures used to assess the nature of the postural control changes in AIS should
also be considered.
CI - Copyright (c) 2011 Elsevier B.V. All rights reserved.

Langue : ANGLAIS