General

Infections in the tissues of the knee joint and systemic infections may lead to severe knee pain. Learn how infections like septic arthritis, reactive arthritis, and bursitis cause knee pain.

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.

Read about the causes of a swollen knee, ranging from certain diseases to types of arthritis. Knee swelling is sometimes referred to as “knee effusion” or “water on the knee.”

Nonsurgical treatment for trigger finger is aimed at reducing inflammation in the tendon sheaths. Common treatments include ice therapy, NSAIDs, and immobilization with a splint.

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).

Inflammation of the sacroiliac joints (SI joints) may be a symptom of one of many inflammatory conditions, but not in every case. Learn the common arthritic and non-arthritic causes of SI joint pain and inflammation.

There are several conditions outside of trauma that often result in knee pain, swelling, and redness. Learn to recognize the symptoms of several of these conditions.

Eating a healthy diet and exercising can help to improve the gut microbiome and reduce the risk of developing arthritis—especially in children.