Arthritis (Knee)

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In a healthy joint, bone ends are covered with a cushion of cartilage and the joint is protected by synovial fluid, a lubricant fluid in the joint. Arthritic joints are swollen, or inflamed, usually because the cartilage has been damaged or worn in some way. Individuals with arthritis typically suffer from stiffness, pain and swelling in the affected area or areas.


The knee is the joint most commonly affected by osteoarthritis. A breakdown of cartilage causes the bones to rub against each other, which results in pain and loss of movement in the joint. It is this breakdown of the joint cartilage that can lead to joint pain, swelling and inflammation. Arthritis is diagnosed after an evaluation of the patient’s symptoms, a physical exam and one or more diagnostic imaging tests.

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