HEALTHBEAT: Doctors hope newer versions of artificial ankles will better mimic nature's joint

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HEALTHBEAT: Doctors hope newer versions of artificial ankles will better mimic nature's joint
4:26 PM EST November 17, 2008 | WASHINGTON | AP

What was left of Dan Sivia's ankle simply didn't work. He limped through his 30s by sheer force of will, one foot almost completely immobile from repeated broken bones and surgeries.

Then a doctor... [MORE]

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