Q angle and subtalar pronation are not good predictors of pain and function in individuals with patellofemoral pain syndrome
DOI:
https://doi.org/10.590/1809-2950/14031522032015Abstract
This study aimed to evaluate the clinical trials' ability in Q angle measurement and subtalar pronation to predict the pain and functional limitations alluded by individuals with Patellofemoral Pain Syndrome (PFPS). Thirty-one individuals with PFPS were recruited for this study. The Anterior Knee Pain Scale questionnaire was used to identify the functional limitations and the Visual Analogue Scale of pain was used to identify the pain experienced by these individuals in the last month. Two clinical trials were performed, measurement of Q angle and posture measurement of the subtalar pronation. The values of the tests were inserted into linear and multiple regression models to obtain the R2and the coefficients of regression for non-continuous measures standardized with the significance level established at α = 0.05. Both tests when placed separately in linear regression models obtained low results for predicting pain and function. On the other hand, when inserted together in multiple regression models the tests explained 9% and 4% of the pain and of the functional limitations of individuals with PFPS, respectively. Although the prediction of pain and functional limitations has improved when the tests were evaluated together, our findings show that both measures, Q angle and subtalar pronation, are not good predictors of pain and functional limitations of individuals with PFPS.Downloads
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