Asociación entre esguince de tobillo y la presencia de dolor lumbar en bailarines de ballet en Lima, Perú

Background: low back pain (DL) and ankle sprain are very prevalent injuries in ballet dancers. Different studies relate both injuries, so it is suggested to carry out an investigation in this regard. Purpose: to determine if there is an association between ankle sprain and the presence of DL in ballet dancers older than 18 years old in the last year. Study design: analytical, prospective, observational and cross-sectional. Methods: 114 dancers from different schools and ballet companies in Lima were contacted; these responded to an online survey related to the presence of DL in the last six months, ankle sprain in the last 12 months, and other sociodemographic variables; as well as covariates of ankle instability, lower limb injury, ligament hypermobilty, among others. Results: 47 participants were included in the study analysis, 61.7 % of which were female and were a median age of 22 years old. Also, 57.5 % had DL and 25.5 % had an ankle sprain in the last 12 months. When associating the variables to DL, a significant association (p<0.05) with weight, BMI and ankle instability was found. Nevertheless, an association between ankle sprain and DL was not confirmed. Conclusion: No association was found between suffering from an ankle sprain in the last year and low back pain in the last 6 months.