What is the function of synovial fluid?

The function of synovial fluid is to lubricate joints and reduce friction during movement. Synovial fluid is a viscous, gel-like substance found in the synovial joints, which are the most movable type of joints in the body. This fluid is produced by the synovial membrane lining the joint capsule and plays a critical role in maintaining joint health.

By lubricating the articular surfaces of the bones within the joint, synovial fluid allows for smoother movements, preventing wear and tear on the cartilage and reducing the risk of injury. Additionally, the fluid enables the bones to glide easily against each other, which is essential for the proper functioning of joints during activities such as walking, running, or bending.

While synovial fluid does provide some nutrients to the cartilage, especially during joint loading and movement, its primary role is focused on lubrication and friction reduction. Thus, the best description of synovial fluid’s main function is its ability to lubricate joints, ensuring efficient and pain-free motion.