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Swelling after lateral release of knee

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I had a lateral release of my knee a little more than 8 weeks ago. After the surgery I had no bruising and very little swelling. I started physical therapy 3 weeks after my surgery--as soon as the incision was healed. I have been going to therapy 3 times a week for the past 5 weeks. Functionally I can do everything except running, jumping, and deep squatting. I have full range of motion, can climb and descend stairs comfortably, and can fairly easily walk a mile. However, my knee has been swelling. Swelling did not become serious until 6 weeks after surgery. I went to my orthopedist and he gave me a cortisone injection 7 weeks after surgery. It has been 8 days since the injection and my knee is more swollen now than before. Swelling increases about .5 cm every 2-3 days. Is there anything else I can do to reduce the swelling? I currently wear a sleeve on it and elevate and ice often. I also get e-stim treatments with ice after each therapy session. There is no pain associated with the swelling.
Thank you for your help!
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replied May 26th, 2017
Painless swelling of the knee joint is indicative of possible synovitis, bursitis or knee effusion.

Treatment of fluid in the knee depends on the underlying cause of the swelling.

General measures such as rest, ice, and analgesics such as acetaminophen and NSAIDS are often helpful.

Use of knee supports can help reduce the discomfort.

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