👉 The JD fluid, also known as the Joint Disease Fluid or Synovial Fluid, is a clear, colorless, and slightly viscous liquid found within the joint cavities of the human body. It plays a crucial role in lubricating and nourishing the articular cartilage, which cushions the ends of bones during movement, reducing friction and wear. Composed primarily of water (about 90%), proteins, glucose, hyaluronic acid, and various ions, the fluid also contains cells like macrophages and fibrochondrocytes that help maintain joint health by removing debris and producing extracellular matrix components. Abnormalities in the composition or quantity of JD fluid can indicate joint disorders such as osteoarthritis, rheumatoid arthritis, or other inflammatory conditions, making its analysis valuable in diagnosing and monitoring these diseases.
