Symptoms of synovitis may come and go, but you should still seek treatment. The doctor may take fluid samples to determine the precise cause of your symptoms. This is done by inserting a needle into the knee, injecting numbing medication, and then removing the fluid which has built up. This fluid is then analyzed in the lab.
A test called the patella tap can help with the diagnosis as well. Sometimes minor swelling is masked by the quadriceps muscles in the thighs. The synovial membrane extends above the patella (the kneecap) for more than an inch, so swelling there can be disguised by the muscles that cover it. For the patella tap, a hand grips the thigh immediately above the patella, pressing fluid down under the patella.
In most cases, treatment consists of rest, ice, and anti-inflammatory medicines like aspirin or ibuprofen. Compression with an Ace-like bandage and elevation of the knee Is also usually recommended. More severe inflammation may require cortisone injections or synovectomy, surgical removal of the tissue. If the condition has progressed and the knee has been severely damaged, total knee replacement may be necessary.
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