What Is Knee Fluid?
Knee fluid is a term that usually refers to the excess buildup of fluid in the knee joint that results from an injury or illness. Body joints contain small amounts of a thick, gel-like substance known as synovial fluid that helps to lubricate and protect joint tissue. In normal amounts, synovial fluid reduces friction between bones and helps to prevent erosion of joint cartilage. When a joint such as the knee is injured, the body tends to produce excessive synovial fluid in an effort to protect it. This often leads to additional problems, however, like swelling and a loss of mobility.
