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- Title
Diagnostic value of bone scintigraphy for aseptic loosening after total knee arthroplasty.
- Authors
Claassen, Leif; Ettinger, Max; Plaass, Christian; Daniilidis, Kiriakos; Calliess, Tilman; Ezechieli, Marco
- Abstract
BACKGROUND: Despite technical improvements, aseptic loosening after total knee arthroplasty (TKA) remains a frequent complication. A one-stage revision arthroplasty is the most common therapeutic pathway.OBJECTIVE: The aim of this study was to evaluate the diagnostic value of bone scintigraphy in detecting aseptic loosening after TKA.METHODS: We retrospectively identified 46 cases of one-stage revision TKA performed between January 2011 and December 2012. In each case a bone scintigraphy was performed at least one year after the primary TKA and 3.2 ± 2.2 month prior to revision arthroplasty. Additionally, we evaluated the rate of satisfaction and pain level 16.2 ± 5.4 months after one-stage revision arthroplasty. RESULTS: Bone scintigraphy indicated aseptic loosening in 28 cases. Intraoperative aseptic loosening was verified in 34 cases. Bone scintigraphy had a sensitivity of 0.76 and a specificity of 0.83 in detecting aseptic loosening. The positive predictive value was 0.93, and the negative predictive value 0.56. At follow-up consultation, 35 patients were very satisfied or satisfied, and 31 patients had no pain or occasional pain.CONCLUSIONS: Bone scintigraphy is a helpful tool in detecting aseptic loosening after TKA. Nevertheless, the results from bone scintigraphy should be compared with clinical findings and patients' disorders.
- Subjects
BONES; RADIONUCLIDE imaging; TOTAL knee replacement; OSTEOARTHRITIS treatment; CLINICAL trials
- Publication
Technology & Health Care, 2014, Vol 22, Issue 5, p767
- ISSN
0928-7329
- Publication type
Article
- DOI
10.3233/THC-140850