Joint meaning

A joint, also known as an articulation, is the connection between two or more bones in the body, allowing for movement and providing mechanical support. Joints can be classified based on their structure and function. Structurally, they are categorized into fibrous, cartilaginous, and synovial joints. Functionally, they are classified as immovable (synarthrosis), slightly movable (amphiarthrosis), and freely movable (diarthrosis) joints. Synovial joints, such as the knee, hip, and shoulder, are the most common type and are characterized by a joint cavity filled with synovial fluid, which lubricates and nourishes the joint while reducing friction during movement. Proper joint function is essential for mobility and performing daily activities.