Knee arthritis is one of the most common causes of knee pain. It is characterized by pain, swelling and stiffness. There are many types of knee arthritis. The most common types are: osteoarthritis, rheumatoid arthritis and post-traumatic arthritis.
Three common types of knee arthritis:
Osteoarthritis is the end result of progressive articular cartilage wear and tear. Radiological features include joint space narrowing, osteophytosis, subchondral sclerosis and subchondral cyst formation.
Rheumatoid arthritis is an autoimmune disease and can cause chronic inflammation of joints. It typically affects small joints of hands and feet. More commonly occurs in women at age younger than 40.
As its name implies, it is sequel of knee injury. It usually develops years after fracture of thigh and/ or shin bone that extended into the joint, meniscal tear or knee ligament injury.