It is one of the most popular operations in sports medicine. It comes in various forms, all with the same name: Hip impingement or bone shaving surgery. World-renowned athletes have had the operation — the Yankees’ third baseman Alex Rodriguez had it about two years ago and the sprinter Tyson Gay had it last summer.
But some sports medicine researchers are asking: where is the evidence that shaving bone helps? Might the bumps or irregular shapes they call impingement be just normal variations? Does the shaved bone grow back? NYT
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