Joints allow our body to move through the connection of individual bones. In order for the bumping bones to slide smoothly, the ends are covered with cartilage and enclosed by a capsule. Between the two cartilage surfaces there is a viscous synovial fluid for "lubrication". This must be renewed constantly. Put simply, just as the hinges of a door must be oiled so that it does not squeak, the human joints also need enough lubrication to keep them moving. In addition to this lubricating function, synovial fluid also has the task of supplying the articular cartilage with important nutrients and transporting breakdown products.
What influences the synovial fluid?
Various factors such as obesity or joint deformity overload the joint and disrupt the metabolism, so that the composition of the synovial fluid changes adversely. For example, the "lubricating" main components of synovial fluid are reduced in quantity and quality. The result: The smooth surface becomes rough tiny pieces of cartilage splinter off and - like sand in the gearbox - splintering cartilage parts increase the wear of the cartilage. The artificial skin reacts with inflammation and produces even less synovial fluid - the joint begins to hurt. It comes to an arthrosis.
Osteoarthritis, a painful, chronic joint disease, leads in the worst case, that no pain-free movements are possible. Although the disease is not curable, you can do a great deal yourself to stay mobile. After the age of 60, at least one in two is affected by joint wear. Beginning signs of wear and tear, especially in the heavily loaded knee joints, can often even be detected around the age of forty. In the initial stage, however, there are still no complaints, but the pain comes only with increasing wear. For many years, osteoarthritis is asymptomatic before it suddenly becomes noticeable through pain and restricted mobility. Typical of the complaints is that they worsen in wet cold weather.