How to reduce knee swelling quickly

Knee swelling may come from an injury, irritated bursa, arthritis, gout, or extra fluid inside the joint. A rapid swelling after twisting or landing can occur with an ACL Tear or Meniscus Tear, while a soft fullness behind the knee can fit a Baker's Cyst. Knee Osteoarthritis may cause swelling that varies with activity.

Stop running, jumping, and deep squats while the knee is swollen. Use a cold pack wrapped in cloth for a comfortable short interval, elevate the leg, and walk only as tolerated. Gentle bending and straightening can prevent stiffness if it does not increase pain. Avoid tight wrapping if it causes numbness or colour change, and ask a clinician before using medication if you have other health conditions.

Seek urgent assessment for a hot red knee with fever, inability to bear weight, a major injury or deformity, rapidly enlarging swelling, or a locked joint. Calf swelling, chest pain, or sudden breathlessness needs emergency help. If the swelling keeps returning, a clinician may discuss imaging or Joint Aspiration to identify and relieve excess fluid.

Ask what may be causing the swelling, whether you need imaging, which exercises are safe, and whether aspiration is appropriate. Mention when it began, any twist or impact, fever, locking, giving way, and whether the knee is hot.