Joint lubrication refers to the process of applying a lubricant to the joints in the body, such as the knees, hips, and shoulders. This lubrication helps reduce friction between the cartilage surfaces, allowing for smoother movement and less wear and tear. It is essential for maintaining joint health and function, especially in individuals who engage in physical activities or suffer from conditions like arthritis. The primary component of joint lubrication is synovial fluid, a thick, viscous liquid produced by the synovial membrane. This fluid nourishes the cartilage and acts as a shock absorber during movement. Proper joint lubrication is crucial for preventing pain and stiffness, promoting overall mobility and quality of life.