• Arthritis
• Are You a Candidate for Hip Replacement? (Video)
• Are You a Candidate for Knee Replacement? (Video)

• Is Surgery Right for You?
  • What to Expect the Day of Surgery
  • What to Expect Following Surgery
  • Possible Complications of Surgery
  • What to Expect When You're Fully Recovered
  • Life After Joint Replacement

• Animation of Normal Knee
• Arthritis: The Leading Cause of Knee Pain
• Conventional Knee Replacement
• Animation of Knee Replacement
• Knee Replacement Surgery

• Hip Treatment Options
• Hip Replacement FAQ

• 10 Questions to Ask
• Standard Treatment Options
• You Don't Have to Live with Joint Pain
• What You Need to Know About Joint Replacement Surgery

• Map & Directions

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Arthritis: The Leading Cause of Knee Pain

One of the most common causes of knee pain and loss of mobility is the wearing away of the joint’s cartilage lining. When this happens, the bones rub against each other, causing significant pain and swelling — a condition known as osteoarthritis. (Trauma or direct injury to the knee can also cause osteoarthritis.) In addition, without cartilage there is no shock absorption between the bones in the joint, which allows stress to build up in the bones and contributes to pain.