What causes?a ?synovial fluid decrease?

They self-lubricate: Synovial fluid is made by the membranes in your joints. Lack of fluid is often used as an explanation for arthritis but it is not actually what is happening. Over production of fluid is more likely to be problematic than a "lack of lubrication". Painful joints, even if they are not swollen should be evaluated by a physician.

Don't fully underst-: and your question. The Decrease in Synovial fluid production is seen in Osteoarthritis, due to the reduction in the cell's ability to produce it. How and Why it happens, is under research but no good explanation as yet has been found for it? I hope I have answered your question to your satisfaction. Ask again, if not what you wanted to ask. Good Luck.

Most pathology in---: -joints such as inflammation or internal injury causes an increase of fluid. Even in severe degenerative arthritis of the knee, when opened 4 a TKA there's always fluid present. I hope someone else will answer this who has knowledge of any condition that causes a decrease.