Σάββατο 3 Φεβρουαρίου 2018

INFLUENCES OF KNEE OSTEOARTHRITIS AND WALKING DIFFICULTY ON KNEE KINEMATICS AND KINETICS

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Publication date: Available online 2 February 2018
Source:Gait & Posture
Author(s): Annalisa Na, Sara R. Piva, Thomas S. Buchanan
BackgroundSelf-reported walking difficulty is a problem among patients with knee osteoarthritis (OA), however, these patients have never been studied as a subgroup population.ObjectiveThe purpose of this study is to examine known knee OA gait mechanics among those with knee OA, with (Diff) and without (NoDiff) self-reported walking difficulty, as compared to age- and sex-matched controls without knee OA.MethodsA total of 39 subjects in three groups of 13 individuals walked at a controlled gait speed during instrumented gait analysis. Gait mechanics were compared between a priori determined groups using the independent t-test.ResultsThe results of the study found that among those with knee OA, knee excursion angles were not significantly different between the Diff and NoDiff groups. Whereas, external knee moments were significantly different between the Diff and NoDiff groups but not between the NoDiff and the control groups. The lack of difference between the NoDiff and control groups were especially interesting because of the moderate to severe OA in the NoDiff group. Therefore, the findings of this study suggest the importance of considering self-reported walking difficulty among those with knee OA. Perhaps patients with knee OA-related walking difficulties use alternative gait parameters that may need to be clinically addressed. Strengths of the study included a matched design and controlled walking speed, whereas limitations were the small sample size and cross-sectional design.ConclusionsGiven the relationships found among self-reported walking difficulty, OA presence, and gait parameters, addressing gait parameters specifically related to walking difficulty may be indicated in this sub-group knee OA population.



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