Knee Cartilage Defect
There are several types of cartilage in your body. Cartilage is found in the supporting structure of your nose, ears, ribs, and on the surfaces of joints. A joint is a bending point where two bones meet. The knee, hip, and shoulder are the three largest joints.
The specialized covering on the ends of bones that meet (articulate) to form a joint is called hyaline or articular cartilage. It is the cartilage that wears when we overdo, age, or sustain an injury. Articular cartilage is unique in that it has no nerves or blood supply. This means that human tissue cannot heal without a blood supply so articular cartilage cannot repair itself.
Rheumatoid Arthritis (RA)
Rheumatoid arthritis (RA) is an autoimmune disease due to unknown reason that causes chronic inflammation of the joints, the tissue around the joints, as well as other organs in the body. It is a chronic joint disease that damages the joints of the body. RA can occur at any age, but is more common in middle age. Infection, genes and hormone changes may also be linked to the disease.