Healthy Joint 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.
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