Osteoarthritis (OA) is that the most typical chronic (long-lasting) joint condition. A joint is wherever to bones move. The ends of those bones area unit coated with protecting tissue known as animal tissue. With OA, this animal tissue breaks down, inflicting the bones inside the joint to rub along. this could cause pain, stiffness, and different symptoms. OA happens most frequently in older individuals, though it will occur in adults of any age. OA is additionally known as chronic joint sickness, osteoarthritis, and wear-and-tear inflammatory disease. though arthritis will injury any joint, the disorder most ordinarily affects joints in your hands, knees, hips and spine. arthritis symptoms will typically be managed, though the injury to joints cannot be reversed. Staying active, maintaining a healthy weight and a few treatments would possibly slow progression of the sickness and facilitate improve pain and joint perform. steoarthritis happens once the animal tissue that cushions the ends of bones in your joints step by step deteriorates. animal tissue could be a firm, slippery tissue that permits nearly resistance joint motion. Eventually, if the animal tissue wears down utterly, bone can rub on bone.