Correlation of dynamic valgus with knee injuries in runners

Abstract

INTRODUCTION: Runners have a high incidence of lower limb injuries, with the knee being the most affected joint. It is directly influenced by the hip and adjacent joints. Muscle weakness of extensors, lateral rotators, and hip abductors leads to a biomechanical change called dynamic valgus, which is a compensatory mechanism, where the center of the knee joint moves medially. OBJECTIVE: This study aimed to correlate dynamic valgus with lesions, Q angle and pelvic leveling. MATERIAL AND METHODS: This is a field research, descriptive, investigative and quantitative. Data were collected in April 2019 at the Piauí Athletics Federation with 14 male runners over 18 years old. To obtain the data, a questionnaire was used and the step down test was submitted to the software for postural evaluation (SAPO) and a questionnaire. They were analyzed for their normal distribution of samples by the Kolmogov-Sminorv test and Pearson's test for numerical data analysis, tabulated in excel for further analysis in GraphPad Prism 7.1. The significance level for statistical analysis was considered as p <0.05. The work was performed after approval by the ethics committee (CAAE: 11001219.5.0000.5193). RESULTS: The results showed no correlation between dynamic valgus and lesions, with Q angle (R2 = -0.200) and pelvic leveling (R2 = 0.253) and p> 0.05. CONCLUSION: In this study no correlation was found between dynamic valgus, knee injuries, Q angle and pelvic leveling.