Knee Pain Health Center

Problems not directly related to an injury or overuse may occur in or around the knee.

• Osteoarthritis (degenerative joint disease) may cause knee pain that is worse in the morning and improves during the day. It often develops at the site of a previous injury. Other types of arthritis, such as rheumatoid arthritis, gout, and lupus, also can cause knee pain, swelling, and stiffness.
• Osgood-Schlatter disease causes pain, swelling, and tenderness in the front of the knee below the kneecap. It is especially common in boys ages 11 to 15.
• A popliteal (or Baker's) cyst causes swelling in the back of the knee.
• Infection in the skin (cellulitis), joint (infectious arthritis), bone (osteomyelitis), or bursa (septic bursitis) can cause pain and decreased knee movement.
• A problem elsewhere in the body, such as a pinched nerve or a problem in the hip, can sometimes cause knee pain.
• Osteochondritis dissecans causes pain and decreased movement when a piece of bone or cartilage or both inside the knee joint loses blood supply and dies.

Treatment

Treatment for a knee problem or injury may include first aid measures, rest, bracing, physical therapy, medicine, and in some cases surgery. Treatment depends on the location, type, and severity of the injury as well as your age, health condition, and activity level (such as work, sports, or hobbies).

Check your symptoms to decide if and when you should see a doctor.