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Acta ortopédica mexicana
versión impresa ISSN 2306-4102
Resumen
GOMEZ-ROBLEDO, J. Three successive fractures of different hip femoral stems on the same patient. Acta ortop. mex [online]. 2016, vol.30, n.3, pp.138-143. ISSN 2306-4102.
The clinical case of an 80-year-old female who suffered three fractures in uncemented stems implanted in her right hip in a period of three years is presented. A fracture occurred in the prosthetic neck and the other two at the juncture of the conical and cylindrical stem portion, coinciding with the metaphyseal-diaphyseal junction of the femur. The main causes of the failure were an increasing concentration of forces at the level of the implant as a consequence of the increased length of the neck and lateralization of the femur (offset). Other causes that have contributed to this prosthetic failure are analyzed.
Palabras llave : Replacement; hip; femoral stem; failure; hydroxyapatite.