Articular cartilage is the material that lines the ends of bones within the joint. It provides lubrication and protection to the underlying bone, and allows smooth motion of the joint. Cartilage has poor blood supply, and once injured, it does not heal readily. Traditionally, there were very few successful treatments for cartilage damage except for joint replacement surgeries. However, emerging technologies have allowed us to successfully perform several types of cartilage repair and cartilage restoration treatments.