• T H Trojian and D B McKeag.
• University of Connecticut Health Center/Saint Francis Hospital and Medical Center, Department of Family Medicine, Hartford, Connecticut 06105, USA. ttrojian@stfranciscare.org
• Br J Sports Med. 2006 Jul 1; 40 (7): 610-3; discussion 613.

BackgroundAnkle sprains are a common and potentially disabling injury. Successful prediction of susceptibility to ankle sprain injury with a simple test could allow ankle sprain prevention protocols to be initiated and help prevent disability in the athletic population.ObjectiveTo investigate the ability of the single leg balance (SLB) test, carried out at preseason physical examination, to predict an ankle sprain during the autumn sports season.DesignProspective cohort studySettingHigh school varsity athletics and intercollegiate athletics.Main Outcome MeasureAnkle sprains in athletes with positive SLB tests.ResultsThe association between a positive SLB test and future ankle sprains was significant. Controlling for confounding variables, the relative risk for an ankle sprain with a positive SLB test was 2.54 (95% confidence interval, 1.02 to 6.03). Athletes with a positive SLB test who did not tape their ankles had an increased likelihood of developing ankle sprains. The relative risk for ankle sprain for a positive SLB test and negative taping was 8.82 (1.07 to 72.70). A history of previous ankle injury was not associated with future ankle sprains in this study. The kappa value for interrater reliability for the SLB test was 0.898 (p<0.001).ConclusionsAn association was demonstrated between a positive SLB test and ankle sprain. In athletes with a positive SLB test, not taping the ankle imposed an increased risk of sprain. The SLB test is a reliable and valid test for predicting ankle sprains.

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