How Lindsey Vonn’s new titanium knee helped her become Olympic-bound once again

An inspiration to countless fans who have watched her rise and fall, and then fall some more, only to rise again.

As Vonn sets her sights on Olympic glory at 41, five years after she retired with a broken body, she has also become one of the great guinea pigs in sports medical history, a live-action experiment in the possibilities of orthopedic reincarnation unfolding at 80 miles an hour down some of the steepest, iciest downhill skiing courses in the world.

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