Acrylic bone cements: mechanical and physical properties.

Mechanical and physical properties are of particular significance for the performance of acrylic bone cement. Several mechanical test methods are described in the literature to characterize the mechanical performance of bone cements. The simulation of the in vivo situation is extremely difficult, however, because of the complex mechanism of loading in the bone.

Acrylic bone cements: composition and properties.

Cementing endoprostheses is one of the most frequently performed orthopedic procedures in the world today. The bone cements that are currently available commercially are all based on the chemical substance methylmethacrylate. Although all of them have the same chemical basis, acrylic bone cements are not all alike.

Improvement in the long-term stability of an amperometric glucose sensor system by introducing a cellulose membrane of bacterial origin.

Classical amperometric glucose sensors that use cellulose membranes of wood origin (Cuprophan) suffer from the fact that their long-term stability in blood is short; therefore, their clinical use is limited. In the present study, a classical amperometric glucose sensor was covered with a bacterial cellulose (BC) membrane. Its surface in comparison to that of the classical glucose sensor (Cuprophan) and its long-term stability were tested in vitro and in vivo.