Abstract

Sealing of the Implants in Orthopedy: Which are the Selection Criteria?

Author(s): Adnane Benmoussa, Hakim El Alama and Jaouad El Harti

Acrylic cements are used to seal orthopedic implants and, since the Eighties, these products did not cease evolving especially during not very invasive methods used to increase the stabilization of the vertebral body. The following article takes stock of the products available on the market. Thus, there exist two great groups of cements, those with high viscosity impregnated or not by an antibiotic used manually in the osseous cavities (finger packing) and, those with low viscosity developed recently and which are injected using a syringe. All these cements in common have a homogeneous chemical composition made mainly by polymers and the monomers of methacrylate of methyl (MY) added with agents of polymerization and dye specific. This composition directly influences the behavior of cement and, can modify its own characteristics especially its viscosity, the time of catch and its fatigue strength, in spite of the various methods of preparation and, of the techniques of cementing. Lastly, the selection criteria of these cements are dependent on their indications, of the type of implant has to pose and of the practices of the expert

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