Knee swelling that will not go down: next steps

When swelling lingers, the knee may still be reacting to repeated strain, inflammation, or an internal injury. Knee osteoarthritis can produce recurring fluid and stiffness. A meniscus tear or ACL tear may cause swelling with catching, giving way, or difficulty fully straightening the knee. Gout can remain inflamed after a flare begins, and knee bursitis can persist when pressure continues. A Baker's Cyst may cause ongoing fullness behind the knee. The pattern matters more than swelling alone: note pain, warmth, range of motion, and whether the size changes with activity.

Arrange a clinical review rather than repeatedly testing the knee with demanding exercise. Avoid movements that increase swelling, such as running, jumping, deep squats, or prolonged kneeling. Rest with the leg supported, use a cool pack wrapped in cloth if comfortable, and maintain gentle pain-free movement. Do not drain the swelling yourself. A clinician may recommend imaging or Joint Aspiration depending on the examination.

Seek urgent care if the knee becomes hot and red, pain escalates quickly, you develop fever, you cannot bear weight, the knee locks, or the calf becomes swollen and painful. Prompt review is also needed after a significant twist or fall. If none of these apply, book an appointment because swelling that continues or repeatedly returns can limit movement and needs a targeted plan.

Ask: What is maintaining the fluid? Could this be arthritis, bursitis, gout, a Baker's Cyst, or a meniscus problem? Do I need an X-ray, another scan, or fluid analysis? Which exercises are suitable, and how will we judge improvement?