Osteoarthritis of the Knee

Picture of a knee joint with osteoarthritis

In osteoarthritis, the cartilage that protects and cushions the joints breaks down over time. As the cartilage wears down, the bone surfaces rub against each other. This damages the tissue and bone, which then causes pain. Osteoarthritis is common in the knee joints.

Credits

ByHealthwise Staff
Primary Medical ReviewerAnne C. Poinier, MD - Internal Medicine
Specialist Medical ReviewerStanford M. Shoor, MD - Rheumatology
Last RevisedApril 8, 2011
By: Healthwise StaffLast Revised: April 8, 2011
Medical Review: Anne C. Poinier, MD - Internal Medicine
Stanford M. Shoor, MD - Rheumatology

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