Nanoindentation of microstructural elements in bone cement
نویسندگان
چکیده
Introduction: Poly(methyl methacrylate), or PMMA bone cement has been a critical material in total joint replacement for over four decades. Modifications used to improve the standard polymer powder/methacrylate monomer system have included the addition of fiber reinforcing phases, bioactive ceramics, antibiotic agents, etc. The microstructural phases in PMMA bone cement can affect its fracture and fatigue behavior [1]. Bone cements originally designed and used for artificial joints are now being used in, for example, vertebroplasty, with increased amounts of radiopacifier [2]. Understanding the microstructural contributions to mechanical performance may be an effective approach to designing or improving bone cements for different applications. In this study we report on using nanoindentation to investigate local properties of microstructural elements of bone cement.
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