Jumping may protect astronauts’ knee cartilage from microgravity damage. Studies on mice show it increases bone density.

Scientists at Duke University have developed a gel-based material that could serve as a replacement for knee cartilage. This ...

In honor of Valentine’s Day, discover the origins of the phrase ‘weak at the knees,’ including its ties to ancient Rome and even astrology.

Florida state Sen. Geraldine Thompson died Thursday following complications from knee replacement surgery, her family said.