[Intra-articular pressure in the large joints--a biomechanical variable pressure pump system]

Because of the anatomy and biomechanics intraarticular pressure modifications are caused by loading and movement of a joint. These continuous pressure alterations are examined in the hip joint of cadavers and in the shoulder-joint of cadavers and volunteers. The clinical importance is shown. The hereto hardly know changes of intraaticular pressure cause a strong synoviamovement and serve the provisioning of the joint-cartilage with the help of the changing, pressure pump-system.