Cartilage is the connective tissue, often in body joints - the knee, the elbow, the ankle, and etc.. Cartilage is avascular - it is not supplied by blood vessels; instead, nutrients diffuse through the extracellular matrix. Since cartilage does not contain blood vessels, it grows and recovers slowly.
Cartilage is composed by chondrocytes cells. Chondrocytes cells produce abundant extracellular matrix, which contain collagen fibers and proteoglycan substances. Cartilage has three types: elastic cartilage, hyaline cartilage and fibrocartilage.
Cartilage degradation often lead to arthritis. Achondroplasia is another cartilage disease - it may result in dwarfism. Chondroma sometimes can also occur.