Three-phase bone scintigraphy pattern of loosening in uncemented hip prostheses
| Autor: | Giorgio Ferlin, Pierluigi Zanco, Franca Chierichetti, Domenico Rubello, N. Borsato |
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| Rok vydání: | 1995 |
| Předmět: |
Male
musculoskeletal diseases Greater trochanter medicine.medical_specialty Time Factors Periprosthetic Technetium Tc 99m Medronate Scintigraphy Asymptomatic medicine Humans Radiology Nuclear Medicine and imaging Radionuclide Imaging Hip medicine.diagnostic_test business.industry Bone Cements General Medicine Middle Aged Acetabulum Prosthesis Failure Surgery surgical procedures operative Lesser Trochanter Bone scintigraphy Case-Control Studies Orthopedic surgery Female Hip Joint Hip Prosthesis medicine.symptom business |
| Zdroj: | European Journal of Nuclear Medicine. 22:299-301 |
| ISSN: | 1619-7089 0340-6997 |
| DOI: | 10.1007/bf00941844 |
| Popis: | The three-phase bone scintigraphy pattern of loosening in uncemented hip prostheses (UHPs) has not previously been elucidated. We evaluated 28 patients with complicated UHPs who had undergone total hip arthroplasty a very long time previously (range 3-20 years, mean 8.4). All the patients were surgically reviewed: 26 UHPs were found to be loosened and two infected. Nine asymptomatic UHPs were taken as controls. The dynamic phase was invariably negative in both loosened and asymptomatic UHPs while markedly positive in the infected ones. The blood pool phase was positive to various degrees in 16 of the 26 loosened UHPs as well as in the infected UHPs, but was invariably negative in painless replacements. In the bone phase, areas of significantly (discrete to marked) increased uptake were observed in all the loosened prostheses as well as in two-thirds of the asymptomatic ones. However, the regions of the lesser trochanter and/or tip and/or shaft were involved exclusively in the case of the loosened UHPs, and diffuse periprosthetic uptake was found only with loosened or infected implants. Areas of slight methylene diphosphonate (MDP) uptake were found at every periprosthetic site and areas of discrete to marked MDP uptake were commonly found in the acetabulum and/or the greater trochanter with both loosened and painless prostheses and are thus considered to be nonspecific findings. |
| Databáze: | OpenAIRE |
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