👉 The motivated fluid, also known as the lubricating fluid or synovial fluid, is a viscous, non-Newtonian fluid that plays a crucial role in the function of synovial joints. It is produced by the synovial membrane lining the joint cavities and circulates through the joint space, reducing friction between the articular cartilage surfaces during movement. This fluid is rich in hyaluronic acid, which gives it its viscoelastic properties, allowing it to both lubricate the joint and absorb shock. The motivated fluid also helps in nutrient transport to the cartilage cells, maintaining their health and function. Its ability to adapt its viscosity under different mechanical stresses ensures smooth and efficient joint movement, highlighting its essential role in joint biomechanics and overall musculoskeletal health.
