Also known as:
Joint pain, Pain in joints
Arthralgia is pain in a joint. A joint is the point at which two bones are connected. Many joints provide support and stability and allow movement, although some, such as those of the pelvis, are not movable.
Joints contain bones, cartilage, and a lining called synovium, which produces a lubricating fluid. Most joints are held together by muscles, tendons, and ligaments and are often cushioned by fluid-filled sacs called bursae.