How to stop knee swelling

Knee swelling is fluid in or around the joint. A sudden swelling after a twisting injury can occur with an ACL Tear or Meniscus Tear. Knee Bursitis may cause a more localised, tender area, while Knee Osteoarthritis can cause swelling and stiffness after use. Gout often presents with sudden intense pain, heat, redness, and swelling. A Baker's Cyst may feel like fullness behind the knee. The symptom does not establish one diagnosis, so onset, injury, warmth, and movement are useful details.

Stop or modify running, squatting, kneeling, and other actions that increase the swelling. Rest with the leg supported and elevate it when sitting. Apply a cold pack wrapped in fabric for short intervals; protect the skin and do not sleep with it in place. Gentle range-of-motion movements can reduce stiffness if they are comfortable. Avoid forcing the knee or repeatedly testing it. If fluid remains, a clinician may examine the joint and discuss medication, imaging, or Joint Aspiration when appropriate.

Seek urgent care after a major injury, a deformed knee, inability to stand, or a knee that suddenly becomes very swollen. Get prompt help for a hot, red joint with fever, severe pain, or feeling acutely unwell. New calf swelling with chest pain or breathlessness is an emergency. Arrange a review for recurrent swelling, locking, giving way, or symptoms that are not improving.

Ask what structure may be irritated, whether you need imaging or fluid testing, and how much weight-bearing is appropriate. Ask when to restart exercise and which strengthening work can protect the knee.