Ankles provide a rare opportunity to recreate a seminal medical study in the comfort of your own home. Back in the mid-1960s, a physician, wondering why, after one ankle sprain, his patients so often suffered another, asked the affected patients to stand on their injured leg (after it was no longer sore). Almost invariably, they wobbled badly, flailing out with their arms and having to put their foot down much sooner than people who'd never sprained an ankle. With this simple experiment, the doctor made a critical, if in retrospect, seemingly self-evident discovery. People with bad ankles have bad balance.
Remarkably, that conclusion, published more than 40 years ago, is only now making its way into the treatment of chronically unstable ankles. "I'm not really sure why it's taken so long," says Patrick McKeon, an assistant professor in the Division of Athletic Training at the University of Kentucky. "Maybe because ankles don't get much respect or research money. They're the neglected stepchild of body parts."
At the same time, in sports they're the most commonly injured body part — each year approximately eight million people sprain an ankle. Millions of those will then go on to sprain that same ankle, or their other ankle, in the future. "The recurrence rate for ankle sprains is at least 30 percent," McKeon says, "and depending on what numbers you use, it may be high as 80 percent."
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