Causes of Knee Pain

The most frequent cause of discomfort and chronic knee pain is arthritis. Arthritis is the leading cause of disability in the U.S. In fact, it’s estimated that 1 in 5 people in the United States have some form of arthritis. Two-thirds of the people who have been diagnosed with arthritis are under the age of 65.¹

Learn more about the causes of knee pain:

• Knee Damage Simulator
  Use this tool to simulate different conditions and injuries that affect the parts of your knee.


• About Knee Arthritis
  Read more about the most common forms of arthritis that can cause debilitating knee pain: Osteoarthritis
  and Rheumatoid arthritis.


• About Traumatic Knee Injuries
  Learn about the third most common cause of joint damage.
  

Next: View Knee Damage Simulator

Reference:
1. Hootman J, Bolen J, Helmick C, Langmaid G. Prevalence of Doctor-Diagnosed Arthritis and Arthritis-Attributable Activity Limitation --- United States, 2003-2005. MMWR. 2006;55(40):1089-1092.