Abstract
Lubricin (also known as proteoglycan 4, or PRG4 and expressed by the PRG4 gene) is a proteoglycan found in the cartilage, synovial membrane and synovial fluid of the knee joint capsule and it is responsible for protection against wear and growth inhibition associated with adhesion in this articulation.Its presence is associated with the inhibition of the pathophysiological process osteoar…