Abstract

Abstract Damage mechanisms in human femoral cortical bone due to a constant radial load were studied in cylindrical specimens. Characterizing this damage is important for understanding its role in press-fit total hip arthroplasty. Cylindrical bone specimens were loaded at a constant internal pressure until failure. Sections were removed for microscopic observations. More microcracks were observed near the endosteal surface, as compared to the outer surface, and were located within the bone matrix and ended at a cement line. Tensile hoop and compressive radial stresses tend to open microcracks in the hoop direction resulting in cracks oriented in the radial direction.

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