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Joint Fluid Interpretation Synovial fluid, often referred as joint fluid, is located in all joints or diarthroses.[1] The synoviocytes also contribute to the local production of cytokines, small-molecule mediators of inflammation, and proteolytic enzymes that degrade the extracellular matrix, therefore being key components of the inflammatory rheumatoid arthritis pathways that affect joints.At the synovial joints, the bones are covered by articular cartilage and are separated from each other by a small cavity that contains the synovial fluid.

Joint Fluid Interpretation
Synovial fluid, often referred as joint fluid, is located in all joints or diarthroses. At the synovial joints, the bones are covered by articular cartilage and are separated from each other by a small cavity that contains the synovial fluid. Together, all these anatomic elements form the joint, which is enclosed in the articular capsule. Inside these capsules are specialized secretory cells termed synoviocytes (types A and B), which produce the components of the synovial fluid (eg, matrix constituents, hyaluronic acid and salts, collagens, fibronectin for the intimal interstitium and synovial fluid). [1] The synoviocytes also contribute to the local production of cytokines, small-molecule mediators of inflammation, and proteolytic enzymes that degrade the extracellular matrix, therefore being key components of the inflammatory rheumatoid arthritis pathways that affect joints. [2, 3] Together, the cartilages and the synovial fluid protect the bones, reducing the friction between them during movement. Synovial fluid also provides the nutrients and lubrication for the joints.