levels. In joints with simulated acute effusion the effect of position on IAP was
dependent upon the volume of fluid in the joint. The results indicate that dynamic
pressure levels in the moving knee are related to the movements of the joint. The
characteristic and reproducible patterns of pressure may reflect changes in the structural
configuration of the joint capsule and surrounding tissues during movement, and are
influenced by the amount of fluid in the joint.
Key words
Intra-articular pressure - Joint movement - Joint physiology