What should you know about swelling that will not go down in the knee?

A swollen knee may contain extra joint fluid or have swelling in the tissues around it. A twist, impact, cartilage or ligament injury, overuse, osteoarthritis, gout, bursitis, or a fluid-filled Baker's Cyst can all be considered. Knee Swelling itself is a symptom, not a diagnosis. The pattern matters: swelling after activity differs from a hot, suddenly swollen joint, and pain, locking, instability, fever, or reduced movement add useful clues.

A clinician may examine your range of motion, tenderness, warmth, and stability. They may decide whether imaging or removal and testing of joint fluid is appropriate. Do not assume the swelling identifies one condition; several problems can present with it.

Reduce activities that clearly increase the swelling, but keep gentle movement within comfort so the knee does not become stiff. Elevate the leg when resting. A wrapped cold pack may help discomfort for short periods; protect the skin and stop if it feels numb or painful. Record when the swelling began, what preceded it, and whether it changes during the day.

Arrange a medical review if the swelling persists, returns repeatedly, or limits walking, bending, or sleep. Bring a list of medicines and any history of injury or inflammatory illness. Treatment depends on the cause and may include physiotherapy, medication, or Joint Aspiration.

Seek urgent care for a knee that becomes very hot and red with fever or marked illness, sudden severe pain, inability to bear weight, a visible deformity, or a rapidly increasing swelling after an injury. Prompt assessment is also warranted if the calf becomes newly swollen and painful, or if the leg is unusually pale, blue, numb, or cold. These signs need examination rather than home monitoring.

Ask what findings may explain the fluid, whether you need imaging or fluid testing, which activities are safe, and what symptoms should trigger urgent review. Ask how you will know whether treatment is helping and when follow-up should occur.