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BMC Musculoskeletal Disorders

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Open Access 01-12-2006 | Research article

The implications of 18F-FDG PET for the diagnosis of endoprosthetic loosening and infection in hip and knee arthroplasty: Results from a prospective, blinded study

Authors: K-St Delank, M Schmidt, JW-P Michael, M Dietlein, H Schicha, P Eysel

Published in: BMC Musculoskeletal Disorders | Issue 1/2006

Abstract

Background

The most frequent complications of joint arthroplasty are septic or aseptic loosening of endoprostheses. Preoperative differentiation is essential, since very different treatment methods result from the diagnoses. The aim of the current study was to evaluate the clinical value of ¹⁸F-Fluoro-deoxyglucose positron emission tomography (¹⁸F-FDG PET) as a diagnostic modality for inflammation and loosening in hip and knee joint prostheses.

Methods

¹⁸F-FDG-PET examinations and multiphase bone scan were performed on hip and knee endoprostheses in 27 patients prior to revision surgical procedures planned for prosthetic loosening. Intact prostheses were found at the opposite site in some patients so that additional 9 joints could be examined with the field of view of ¹⁸F-FDG PET. Verification and valuation of the PET and scintigraphic image findings were conducted by comparing them with information combined from intraoperative findings, histopathology, and microbiological investigations.

Results

Evidence of loosening was correctly determined in 76.4% of cases using ¹⁸F-FDG-PET, and in 75% of cases using bone scan. The detection of periprosthetic inflammation using ¹⁸F-FDG-PET had a sensitivity of 100% for septic cases and of 45.5% in cases of increased abrasion and aseptic foreign-body reactions. However, reliable differentiation between abrasion-induced and bacterial-caused inflammation was not possible using ¹⁸F-FDG-PET.

Conclusion

¹⁸F-Fluoro-deoxyglucose positron emission tomography (¹⁸F-FDG-PET) allows reliable prediction of peri-prosthetic septical inflammatory tissue reactions. Because of the high sensitivity of this method, a negative PET result in the setting of a diagnostically unclear situation eliminates the need for revision surgery. In contrast, a positive PET result gives no clear differentiation regarding the cause of inflammation.

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The pre-publication history for this paper can be accessed here:http://www.biomedcentral.com/1471-2474/7/20/prepub

Title: The implications of 18F-FDG PET for the diagnosis of endoprosthetic loosening and infection in hip and knee arthroplasty: Results from a prospective, blinded study
Authors: K-St Delank
M Schmidt
JW-P Michael
M Dietlein
H Schicha
P Eysel
Publication date: 01-12-2006
Publisher: BioMed Central
Published in: BMC Musculoskeletal Disorders / Issue 1/2006
Electronic ISSN: 1471-2474
DOI: https://doi.org/10.1186/1471-2474-7-20

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The implications of 18F-FDG PET for the diagnosis of endoprosthetic loosening and infection in hip and knee arthroplasty: Results from a prospective, blinded study

Abstract

Background

Methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Methods

Results

Conclusion

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