The fastest way to get rid of fluid on the knee is to have a doctor perform a joint aspiration, which is where fluid is drained from your joint.
When a joint aspiration is done to remove fluid from the knee it quickly reduces any pain and pressure.
Other options for getting rid of fluid on the knee corticosteroid injections which help to reduce inflammation and even physical therapy to improve your knees range of motion and strength.
Some things you can do at home for fluid on the knee are to rest, apply ice and compression and elevate your leg which can also help to manage swelling and pain.
Applying a cold compress to your knee for 15 minutes to 30 minutes can help reduce any swelling and pain with fluid on the knee.
Massaging your kee can also help fluid to drain from the joint in the knee.
You can give yourself a gentle self massage on your knee joints and even apply some lubrication to your knee such as with castor oil.
Seeing a massage professional can also help with fluid on the knee.
Walking is also a good way to reduce fluid buildup in your knees, especially if the knee swelling is related to any mild or moderate knee pain from osteoarthritis or other conditions.
Walking is also good for your health and joints and increases blood flow and circulation, which helps to drain excess fluid and reduce inflammation.
Although if your knee swelling is a result of a severe injury then rest is often better initially and then you can return to walking.
Walking enhances the blood flow to your knee joint and helps to transport oxygen and nutrients to your tissues and aids in waste removal, including excess fluid.