Arthritis is a disease that causes stiffness, pain, and swelling in the joints. Arthritic conditions are different from person to person in the how long the pain lasts, how severe it is, and how it effects the person, sometimes depending on the type of Arthritis. In order to explain in depth how one is diagnosed with Arthritis it is necessary that one understands the interior bone structure and the terminology. Joints serve as cushions for the bones and prevent bones from rubbing against each other. Joints are mode up of smooth elastic tissue called cartilage and are surrounded by a casting called the joint capsule. The joint capsule is lined up with Synovil membrane. It gives off synovial fluid, which is a liquid that fills the joint cavity and it also helps reduce friction between the bones. In most Arthritis cases this cushion like tissue is damaged or in the process of damaging thus causing pain. Our bones look like a tight net of strands. They are formed by a protein called collagen and hardened by calcium salts and other minerals. The net is filled with bone marrow and blood vessels, and protected by a dense outer shell.

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