| The purpose of this study was to compare postural stability, muscle strength and functional performance in a group of subjects who were one-year post total knee arthroplasty (TKA) to a group of subjects matched for age and gender who did not have TKA. Assessments of muscle strength, postural stability in single stance and self perceived function were performed. The Wilcoxon Signed Ranks, used to test for significance of difference in scores of self perceived function between the groups was not significant (p = .08). A repeated measures multivariate analysis of variance (MANOVA) used to test for significance of differences in the strength and postural stability variables between the groups revealed significant differences (p = 0.00). Subsequent univariate analysis of variance (ANOVA) tests revealed significance differences between the two groups on measures of quadriceps strength ( p = 0.045), hamstrings strength (p = 0.00), gastrocnemius strength (p = 0.00), and postural stability (p = 0.021). In conclusion, compared to age and gender matched controls, TKA subjects who had surgery 1-2 years prior had postural stability and muscle strength deficits but no difference in the self perceived function. |
