The bone ends of a joint are covered with a smooth material called cartilage. The cartilage cushions the bone and allows the joint to move easily without pain. The joint is enclosed by a fibrous envelope called the synovium which produces a fluid that helps to reduce friction and wear in a joint. Ligaments connect the bones and keep the joint stable. Muscles and tendons power the joint and enable it to move.
Inflammation is one of the body's normal reactions to injury or disease.
In an injured or diseased joint, this results in swelling, pain, and stiffness. Inflammation is usually temporary, but in arthritic joints, it may cause long-lasting or permanent disability. Lose one pound, Smoking costs. Us Disclaimer Privacy Policy Feedback Best viewed with Netscape 4.0 or Internet Explorer 4.0 and above and on 800 x 600 screen resolution.