title: Definition of endoprosthetic loosening. Comparison of arthrography, scintigraphy and roentgen stereophotogrammetry in prosthetic hips.
abstract: Contrast arthrography, radionuclide arthrography, scintigraphy and roentgen stereophotogrammetric analysis (RSA) were used to detect mechanical loosening in 14 painful total hip replacements. All prosthetic components unstable by RSA, or with abnormal arthrogram, or with increased scintigraphic activity, or loose at revision were migrating, but no non-migrating components demonstrated any of these signs of loosening. Our findings indicate that mechanical loosening should be defined as migration.
mesh_terms: D003287:Contrast Media; D005708:Gallium; D006621:Hip Joint / Q000000981:diagnostic imaging* / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D010780:Photogrammetry; D010781:Photography; D011475:Prosthesis Failure; D011859:Radiography; D011877:Radionuclide Imaging; D013669:Technetium Tc 99m Medronate; D013671:Technetium Tc 99m Sulfur Colloid
chemical_list: D003287:Contrast Media; D013671:Technetium Tc 99m Sulfur Colloid; D005708:Gallium; D013669:Technetium Tc 99m Medronate