Archives of physical medicine and rehabilitation · 2010
Weight-bearing asymmetry in relation to measures of impairment and functional mobility for people with knee osteoarthritis.
СтатьяПоддержка NIH: внешняя программаПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Christiansen Cory L, Stevens-Lapsley Jennifer E
Аннотация
OBJECTIVES: To compare weight-bearing asymmetry (WBA) for people with unilateral knee osteoarthritis (OA) with that for healthy adults of similar age. In addition, associations between WBA and clinical measures of knee impairment and functional mobility were evaluated.
DESIGN: Cross-sectional design with age-matched control (CTL) group.
SETTING: Clinical research laboratory.
PARTICIPANTS: People with end-stage unilateral knee OA (n=50) (OA group) and healthy people (n=17) (CTL group) were enrolled in the study (N=67).
INTERVENTIONS: Not applicable.
MAIN OUTCOME MEASURES: WBA during a Five Times Sit-to-Stand Test (FTSST) based on average vertical ground reaction force under each foot, self-reported knee pain assessed using a Numerical Pain Rating Scale, knee extensor strength asymmetry based on peak isometric knee extension torque, knee motion asymmetry based on maximum passive knee extension and flexion angles, FTSST time, six-minute walk test distance, and Stair Climbing Test time.
RESULTS: The OA group demonstrated greater WBA than the CTL group during transitions between sitting and standing as measured by an absolute symmetry index (P=.015). No correlation was found between WBA and knee motion asymmetry, but comparisons of WBA with all the other outcome variables indicated fair relationships (range, r=.29-.44).
CONCLUSIONS: Weight-bearing asymmetry during transitions between sitting and standing can serve as a clinically relevant measure related to both knee impairment and functional mobility for people with unilateral knee OA.
DESIGN: Cross-sectional design with age-matched control (CTL) group.
SETTING: Clinical research laboratory.
PARTICIPANTS: People with end-stage unilateral knee OA (n=50) (OA group) and healthy people (n=17) (CTL group) were enrolled in the study (N=67).
INTERVENTIONS: Not applicable.
MAIN OUTCOME MEASURES: WBA during a Five Times Sit-to-Stand Test (FTSST) based on average vertical ground reaction force under each foot, self-reported knee pain assessed using a Numerical Pain Rating Scale, knee extensor strength asymmetry based on peak isometric knee extension torque, knee motion asymmetry based on maximum passive knee extension and flexion angles, FTSST time, six-minute walk test distance, and Stair Climbing Test time.
RESULTS: The OA group demonstrated greater WBA than the CTL group during transitions between sitting and standing as measured by an absolute symmetry index (P=.015). No correlation was found between WBA and knee motion asymmetry, but comparisons of WBA with all the other outcome variables indicated fair relationships (range, r=.29-.44).
CONCLUSIONS: Weight-bearing asymmetry during transitions between sitting and standing can serve as a clinically relevant measure related to both knee impairment and functional mobility for people with unilateral knee OA.