Articular cartilage is a smooth, white tissue that covers the ends of bones in joints. It helps reduce friction during movement and acts as a cushion, absorbing shock to protect the underlying bone. This cartilage is essential for maintaining joint health and function. Made primarily of water, collagen, and proteoglycans, articular cartilage has a unique structure that allows it to withstand pressure and stress. Unlike other tissues, it has a limited ability to heal itself when damaged, which can lead to conditions like osteoarthritis if not properly cared for.