Arthritis is a group of conditions mainly involving damage to the joints of the body. Surrounding each joint is a protective capsule holding a lubricating fluid to aid in motion. Cartilage, a slippery smooth substance, covers most joints to assure an even, fluid motion of the joint. With joint arthritis, the cartilage may be damaged, narrowed and lost by a degenerative process. When a joint is inflamed it may be swollen, tender, warm to the touch or red and the symptoms include joint pain and limited movement of joints. There are over 100 different forms of arthritis some of which is caused due to trauma to the joint, infection of the joint, or age.