An attempt has been undertaken in this study to physically modify surgical cement based on polymethyl-methacrylate (PMMA) with glassy carbon in order to improve functional properties of the cement. It has been demonstrated that it is possible to reduce shrinkage and maximum temperature of the polymerizable system by adding powdered glassy carbon to surgical cement. The obtained polymer composite with glassy carbon has retained the properties of a viscoelastic material. Low-cycle fatigue tests have shown that cement modification with glassy carbon particles reduced its susceptibility to cyclic creep. The evidence for this is a minor change of the dynamic elasticity modulus of the modified cement with a simultaneously increasing number of load cycles. Through an appropriate selection of components, the PMMA - glassy carbon composite can achieve satisfactory durability, highly desirable by surgeons.