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Healthy joint vs. damaged joint

Healthy joint vs. damaged joint

Picture of healthy vs. damaged joint

Illustration copyright 2004 by Nucleus Communications, Inc. All rights reserved. http://www.nucleusinc.com

In rheumatoid arthritis, the joint lining (synovium) fills with immune cells, blood vessels, and other cells. This material grows until it erodes through the cartilage and surrounding bone as it expands. It also loosens ligaments and tendon attachments.

Last Updated: August 18, 2008
Medical Review: Anne C. Poinier, MD - Internal Medicine
Stanford M. Shoor, MD - Rheumatology
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