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How does rheumatoid arthritis affect the knees?

Rheumatoid arthritis (RA) is an autoimmune condition, meaning the immune system mistakenly attacks healthy tissues. RA in the knees may severely affect a person’s mobility.

Source: Medical News Today

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  • American Association of Hip and Knee Surgeons
  • American Academy of Orthopaedic Surgeons
  • Alpha Omega Alpha Honor Medical Society
  • Sibley Memorial Hospital
  • Johns Hopkins University