Knee pain affects people of all ages and often results from injury such as sprains, strains or tears. Some knee pain originates from a medical condition such as arthritis, gout or infection.
- Knee pain is widespread, causing approximately one-third of all U.S. doctor visits.
- Iliotibial band syndrome, one of the most frequent injuries among runners, causes about one out of 20 lower limb injuries in long-distance runners; it’s also prevalent among cyclists, hikers and backpackers.
- Nearly one in two people may develop symptomatic knee osteoarthritis by age 85.
- Knee replacement surgery is the most common joint replacement in the United States. Most people get a knee replacement between ages 50 and 80; the average age is 70.
