Arthritis is a condition that causes pain and stiffness in joints. Although there are many different types of arthritis, the types that most often affect the knee are:
Knee arthritis causes pain and stiffness and can make walking difficult.
The cause of arthritis is not known.
Anyone can get osteoarthritis, but it is more common among people over the age of 50 who:
Rheumatoid arthritis can affect people of any age.
While there is no cure for arthritis, your doctor can recommend treatments to reduce pain, make moving easier, and slow the progress of the disease. These include: