Application of scanning microscopy and X-ray microanalysis for description of the admixture surgical cements fracture

The work presents computer based methods of biomaterial testing. The researches attempt at description of the admixture cement fracture using the methods of the X-ray microanalysis and the electron scanning microscopy. The low cycle fatigue investigations of the surgical cement Palacos R with PMMA base with and without admixtures of fine grained powder Al2O3 and new generation antibiotic (III generation cefalosporin) have been carried out. The elaborated method proved to be suitable for identification of structure elements in surgical cement modified with ceramic and antibiotic particles. The obtained results proved that fracture surface of cement Palacos R with and without admixtures after low cycle fatigue have been mixed – partial brittle and partial ductile. The fracture process have been arrived through separation of the material on the border of the admixture particles and the matrix.