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Structural and Mechanical Properties of the Cement-Bone Composite

Introduction Joint arthroplasty restores the biomechanics of damaged bone extremities with biomaterials. Cemented prosthesis are mainly indicated when the state of the hosting tissue does not meet the general requirements of conformity and of a healthy structure. Cements based on self-polymerizing poly(methyl-methacrylate) (PMMA) are the most used commercial synthetic biomaterials for anchoring a prosthetic component to bone (1, 2). They consist of a solid powder phase made of PMMA or related copolymer and a liquid monomer phase. The polymerization is obtained through a free radical reaction regulated by the initiator and the activator. In this study, the architecture and the effects of bone cement on the viscoelastic properties of spongy bone are investigated.