Zusammenfassung
Klinisches/methodisches Problem
Komplikationen wie Lockerung und Infekt stellen ein häufiges Problem nach Hüft- und Kniegelenkprothesen dar.
Radiologische Standardverfahren
Wenn die konventionelle Röntgenaufnahme nicht zum Ziel führt, ist die klassische konventionelle Skelettszintigraphie die am häufigsten verwendete „Second-line“-Bildgebung.
Methodische Innovationen
Die „single photon emission computed tomography“/CT (SPECT/CT) bietet metabolische und morphologische Informationen bzgl. Prothesenkomplikationen in einem Untersuchungsgang und ist zunehmend in größeren Kliniken verfügbar.
Leistungsfähigkeit
Die SPECT/CT ist eine viel versprechende Methode und wird im klinischen Alltag bei der Evaluation von Gelenkprothesen zunehmend eingesetzt. Es sind noch mehr prospektive Studien nötig, um die Leistungsfähigkeit und den Zusatznutzen gegenüber der klassischen Szintigraphie zu evaluieren.
Bewertung
In unserer Klinik wird die Knochenszintigraphie bei der Abklärung von Prothesenkomplikationen zumeist mit einer SPECT/CT kombiniert und liefert regelmäßig wichtige Zusatzinformationen.
Empfehlung für die Praxis
Die SPECT/CT entwickelt sich zunehmend zum Standard der „Second-line“-Abklärung von Gelenkprothesen nach dem konventionellen Röntgenbild.
Abstract
Clinical/methodical issue
Complications, such as loosening or infections are common problems after hip or knee arthroplasty.
Standard radiological methods
If conventional X-rays are equivocal bone scintigraphy is the classical second-line imaging modality.
Methodical innovations
Single photon emission computed tomography/computed tomography (SPECT/CT) offers metabolic and morphologic information in one imaging step and is becoming increasingly more available in larger hospitals.
Performance
The SPECT/CT procedure is a promising method and is increasingly being used in daily routine to evaluate joint arthroplasty. The additional benefit compared with classical conventional bone scintigraphy has to be evaluated in further prospective studies.
Achievements
In our hospital SPECT/CT regularly gives important additional information regarding prosthetic joint complications.
Practical recommendations
SPECT/CT is increasingly being used as the second step imaging standard modality if conventional X-rays are equivocal.
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Strobel, K., Steurer-Dober, I., Huellner, M. et al. Stellenwert der SPECT/CT bei Knie- und Hüftgelenkprothesen. Radiologe 52, 629–637 (2012). https://doi.org/10.1007/s00117-011-2270-3
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DOI: https://doi.org/10.1007/s00117-011-2270-3