April 25, 2014 4:19 PM

From new toes to new cartilage — innovations for fixing our aching joints

For much of his career as a Miami Beach firefighter, Luis R. Garcia Jr. ran about three miles a day, five days a week. Later, after he was elected to the Florida House of Representatives, Garcia played in an annual softball game between legislators. He was a catcher, a position notoriously hard on the knees.

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