Synovial fluid is often described as the ‘engine oil’ of human joints. Composed primarily of high-molecular-weight hyaluronic acid, lubricin, and interstitial fluid, it forms a microscopic protective film that prevents direct cartilage-on-cartilage friction.
When inflammatory cytokines like TNF-alpha and IL-1beta infiltrate the joint space, they activate enzymatic breakdown of hyaluronic acid chains. The fluid thins, loses its cushioning capability, and leaves chondrocytes exposed to mechanical shear stress.
Modern regenerative protocols focus on halting this enzymatic breakdown using natural anti-inflammatory polyphenols and providing the exact biological precursors needed to stimulate synoviocyte cells to secrete fresh, viscous lubricating fluid.