intra-articular fibrocartilage

Intra-articular fibrocartilage is a type of connective tissue found within joints, primarily acting as a cushion to manage compression and reduce stress. It is composed of cartilage cells (chondrocytes) that produce a collagen matrix, which contains protein and carbohydrate complexes, as well as elastic and collagen fibers organized into bundles. This tissue lacks blood vessels and nerves, receiving nutrients from surrounding connective tissue.

Intra-articular fibrocartilage can be complete plates called disks or incomplete plates called menisci. These structures are attached to the joint capsule and stretch across the joint cavity. They are found in joints like the jaw, sternoclavicular joint, wrist, knee, and shoulder. Their main function is to aid in the gliding movements of bones within these joints. Injuries to intra-articular fibrocartilage, such as tears in the knee or hip, are common and can lead to joint instability.12