The Long-Awaited Breakthrough for Arthritis Pain The miracle of TNF blockers is this: they work. Nearly two of every three patients who try these medications get lasting relief from joint pain and inflammation. Known as biologic DMARDs, these high-tech drugs inhibit the action of tumor necrosis factor (TNF), a protein that contributes to joint damage associated with rheumatoid arthritis, psoriatic arthritis and ankylosing spondylitis. Arthritis Without...