WHAT IS SYNOVIAL FLUID?
Synovial fluid is a thick very slippery substance that is produced by the membrane lining the joint, which is called the synovium. In the knee for example the membrane is very large and forms the entire surface of the interior of the knee joint. Almost every joint that we have contains synovial fluid. The synovial fluid acts as a lubricant, carries nutrition to the joint and as a cushion for the joint. Synovial fluid is known to become thicker and more viscous when a person is very active as in running, jumping, or vigorous exercise of any type.
