| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a PMMA bone cement that possesses increased impact resistance and increased fatigue life and simultaneously meets the minimal 4-point flexural strength, flexural modulus, and compressive strength requirements. <P>SOLUTION: A 2-component PMMA bone cement having powder and liquid components or a paste bone cement includes at least one homopolymer or one copolymer having a glass transition temperature of more than 45°C, and at least one biocompatible elastomer that has a glass transition temperature of less than 37°C, is soluble or insoluble in alkylmethacrylates and/or alkyldimethacrylates and/or alkyltrimethacrylates and/or alkyltetramethacrylates and has a residual monomer content of less than 5%. Thus, the PMMA bone cement that meets mechanical requirements such as 4-point flexural strength, flexural modulus, compressive strength and impact resistance is obtained. <P>COPYRIGHT: (C)2009,JPO&INPIT |
