Theres no doubt that movement helps joints. But pain, weakness and fear of falling may get in the way of being physically active. If that happens, consider getting some support-from a cane, walker or rollator. People with osteoarthritis, which is the wearing away of the cushioning material (cartilage) in joints, need to exercise. Movement helps to circulate synovial fluid across the joint, which provides much-needed lubrication and nutrition to the joint.