title: [Three successive fractures of different hip femoral stems on the same patient].
abstract: 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.
authors.affiliation: Servicio de Traumatología y Cirugía Ortopédica. Hospital Sierrallana, Torrelavega, España.
authors.forename: J
authors.initials: J
authors.lastname: Gómez-Robledo
mesh_terms: D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip; D005260:Female; D005264:Femoral Fractures; D005269:Femur; D006622:Hip Prosthesis; D006801:Humans; D057068:Periprosthetic Fractures; D011474:Prosthesis Design; D011475:Prosthesis Failure; D016896:Treatment Outcome
keywords: Replacement; failure; femoral stem; hip; hydroxyapatite