[Prevention of decubitus: an overview].

A description of the prevention of pressure sores is only possible when the definition of pressure sores is clear. As with other disorders early identification of patients at risk is of great importance. Beside clinical experience, several systems of registration are available for early identification. Some of these systems are described in this article. Prevention is discussed by dividing activities into those aiming at diminishing pressure- and shear forces and those improving patient's general condition. Finally, the first symptoms of pressure sores and the significance of primary, secondary and tertiary prevention are mentioned.