What is the main role of synovial fluid in joints?

The main role of synovial fluid in joints is to lubricate and reduce friction. This specialized fluid is found in the synovial cavity of joints and plays a crucial role in facilitating smooth movements between the articulating surfaces of bones. By creating a slippery environment, synovial fluid minimizes wear and tear on cartilage during activities such as walking, running, or lifting, thereby promoting joint health and function.

Additionally, while synovial fluid does have some secondary roles, the primary and most critical function is its lubrication properties. It helps to ensure that the joint can move freely without causing damage to the surrounding structures. The presence of synovial fluid is essential for maintaining the overall mobility and stability of synovial joints, which are the most common type of joint in the human body.