That’s a very good question. Studies have shown that proprioceptive training to help the joint regain its finely tuned sense of position does help prevent repeated ankle sprains.
But preventive measures such as taping, bracing, and proprioceptive training don’t seem to help with first time sprains. These approaches seem to work best for those individuals who have already sprained their ankles at least once.
That’s not to say ankle sprains can’t be prevented. Researchers haven’t found a foolproof method yet, but proper shoe wear, good postural alignment, and muscle strengthening may help. Flexibility is also considered important, so including a stretching program may be a good idea. Balance work makes up the final piece of prevention.
We are far from knowing everything that would help us predict who might be at risk for ankle sprains. But with the large numbers of people (from children to older adults) engaged in sports activities, injury prevention is becoming the focus of more and more studies.