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dc.contributor.authorKevin McIntireen_US
dc.contributor.authorMarc Asheren_US
dc.contributor.authorDouglas Burtonen_US
dc.contributor.authorWen Liuen_US
dc.date.accessioned2009-05-05T19:40:16Z
dc.date.available2009-05-05T19:40:16Z
dc.date.issued2006-03-31en_US
dc.identifier.citationKevin McIntire;Marc Asher;Douglas Burton;Wen Liu: Trunk rotational strength asymmetry in adolescents with idiopathic scoliosis: an observational study. Scoliosis 2007, 2(1):9.en_US
dc.identifier.urihttp://hdl.handle.net/2271/639en_US
dc.description.abstractBACKGROUND:Recent reports have suggested a rotational strength weakness in rotations to the concave side in patients with idiopathic scoliosis. There have been no studies presenting normative values of female adolescent trunk rotational strength to which a comparison of female adolescents with idiopathic scoliosis could be made. The purpose of this study was to determine trunk rotational strength asymmetry in a group of female adolescents with AIS and a comparison group of healthy female adolescents without scoliosis.METHODS:Twenty-six healthy adolescent females served as the healthy group (HG) (average age 14 years) and fourteen otherwise healthy adolescent females with idiopathic scoliosis served as the idiopathic scoliosis group (ISG) (average age 13.5 years, average Cobb 28°). Participant's isometric trunk rotational strength was measured in five randomly ordered trunk positions: neutral, 18° and 36° of right and left pre-rotation. Rotational strength asymmetry was compared within each group and between the two groups using several different measures.RESULTS:The HG showed strength asymmetry in the 36° pre-rotated trunk positions when rotating towards the midline (p < 0.05). The ISG showed strength asymmetry when rotating towards the concavity of their primary curve from the neutral position (p < 0.05) and when rotating towards the concavity from the 18° (p < 0.05) and 36° (p < 0.05) concave pre-rotated positions. The ISG is significantly weaker than the HG when rotating away from the midline toward the concave (ISG)-left (HG) side from the concave/left pre-rotated 18° (p < 0.05) and 36° (p < 0.05) positions.CONCLUSION:The AIS females were found to be significantly weaker when contracting toward their main curve concavity in the neutral and concave pre-rotated positions compared to contractions toward the convexity. These weaknesses were also demonstrated when compared to the group of healthy female adolescent controls. Possible mechanisms for the strength asymmetry in ISG are discussed.en_US
dc.languageenen_US
dc.language.isoen_USen_US
dc.publisherBioMedCentralen_US
dc.relation.isversionofhttp://www.scoliosisjournal.com/content/2/1/9en_US
dc.relation.hasversionhttp://www.biomedcentral.com/content/pdf/1748-7161-2-9.pdfen_US
dc.rightsThis is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/2.0en_US
dc.titleTrunk rotational strength asymmetry in adolescents with idiopathic scoliosis: an observational studyen_US
dc.typeArticleen_US
dc.identifier.doi10.1186/1748-7161-2-9en_US
dc.identifier.pmid16759428en_US
dc.rights.accessrightsopenAccessen_US
dc.date.captured2009-04-27en_US


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This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Except where otherwise noted, this item's license is described as: This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.