Osteoarthritis in the knee is a painful condition affecting nearly half of all Americans at some time - and two thirds of obese adults. Research suggesting that physical activity could help prevent it has been presented this week at the AVS 62nd International Symposium and Exhibition, in San Jose, CA.
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Osteoarthritis affects around half of all Americans at some point in their lives.

Osteoarthritis is a degenerative bone disease resulting from a reduction in the cartilage, leading to an increase in friction.

Cartilage is a firm, rubbery material covering the ends of the bones in the knee joint.

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