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Oprah gets her knees replaced — and learns to appreciate the human body

Oregon boy, 5, celebrates 'superhero heart' after he was born with 'Swiss cheese' defect

Dodgers' Walker Buehler undergoes Tommy John surgery for 2nd time

Brady Quinn blasts Zach Wilson hype after Jets' preseason opener: 'They want so badly for this to work out'

Pig organ transplants being tested on dead human bodies

New York researchers conduct pig heart transplant experiments in hopes of one day saving human lives

Gregory Itzin, actor who played president on '24,' dead at 74

Celebrities get real about plastic surgery: 'Good plastic surgery, you can't tell'

Travis Barker’s ‘life-threatening’ pancreatitis from recent endoscopy: What is it?

Texas family lawsuit alleges surgeon gave 4-year-old vasectomy during hernia operation