A swollen knee, sometimes called “water on the knee,” is cause for concern. Learn when medical care is necessary, how to treat a knee swelling at home, and how doctors can remove fluid from a knee using processes called joint arthrocentesis and bursal aspiration.
Inflammatory arthritis is a group of conditions characterized by damage to the synovial lining of the joint. Rheumatoid arthritis is one of the most common forms of inflammatory arthritis.
Knee joint pain and discomfort from arthritis can be experienced in different ways: a dull ache, a sharp, stabbing pain, stiffness, warmth, and swelling.
Structures that affect the joint, such as muscles, tendons, and ligaments can cause pain during joint movement. These are not forms of arthritis, but they can lead to degeneration in the joint (osteoarthritis).