Arthritis is inflammation of one or more of your joints. The most common types of arthritis are osteoarthritis and rheumatoid arthritis. Osteoarthritis causes cartilage – the hard, slippery tissue that covers the ends of bones where they form a joint – to break down. It involves wear-and-tear damage that can result in bone grinding directly on bone, which causes pain and restricted movement. This wear and tear can occur over many years, or it can be hastened by a joint injury or infection. Rheumatoid arthritis is an auto immune disorder that first targets the lining of joints (synovium). It can eventually destroy cartilage and bone within the joint.
Joint Pain can be discomfort, pain or inflammation arising from any part of a joint – including cartilage, bone, ligaments, tendons or muscles.