Osteoarthritis

Osteoarthritis (OA) is the most common form of arthritis. It can affect any joint but is most common in the knees, hip, spine, and hands. OA occurs when the cartilage — the tough, elastic tissue that cushions the joint — breaks down and wears away.

BASICS of OA

Q&A About OA

Answers to common questions that readers have asked us, written by our team of medical experts.

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Statements and opinions expressed on this Web site are those of the authors and not necessarily those of the publishers or advertisers. The information provided on this Web site should not be construed as medical instruction. Consult appropriate health-care professionals before taking action based on this information.

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