The rubbery, delicate, malleable, smooth, lubricating and cushiony substance that lines the ends of bones at every joint in the human body. It provides smooth, frictionless movement between the two bones of a joint.
There are no nerve endings or blood vessels in articular cartilage. It relies on the fluid in the joint for nutrition. If articular cartilage is torn, split, cut, thinned, dam- aged, loose, fragmented, or shredded, it can lead to pain and dysfunction. When it is altered from age, disease, or trauma, it acts as a mechanical irritant and leads to inflammation.