title: [Unrecognised dissociation of the bipolar hip prosthesis Avantage® (Biomet®) after closed reduction of a dislocation: a rare complication].
abstract: An 84-year-old female patient was admitted to our emergency department with a periprosthetic fracture of the left femur with an implanted Avantage prosthesis (Biomet®). Conventional X-ray images revealed besides the fracture a lateralisation of the prosthesis stem. An additional CT scan showed a dissociation of the polyethylene inlay from the head of the prosthesis which took place 3 years ago in the course of a closed reposition of a postoperative luxation. This event shows the relevance of a precise analysis of X-ray images after reposition regarding the exact articulation of the different prosthesis components.
authors.affiliation: Abteilung für Orthopädie und Unfallchirurgie, Robert-Bosch-Krankenhaus, Stuttgart.
authors.forename: M B
authors.initials: MB
authors.lastname: Zinke
authors.affiliation: Abteilung für Orthopädie und Unfallchirurgie, Robert-Bosch-Krankenhaus, Stuttgart.
authors.forename: B
authors.initials: B
authors.lastname: Kinner
mesh_terms: D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects; D020878:Device Removal; D003937:Diagnosis, Differential; D019544:Equipment Failure Analysis; D005188:False Negative Reactions; D005260:Female; D005264:Femoral Fractures / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000601:surgery; D006617:Hip Dislocation / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery*; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D017211:Treatment Failure