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[Labeled leukocyte scintigraphy and total hip prosthesis]
F T Van1, P Renaux, I el Esper
1C.H.U. Amiens Nord, Service de chirurgie orthopédique et traumatologique, France.
Acta Orthopaedica Belgica
|December 1, 1996
Summary
Labelled leukocyte scintigraphy is a key tool for diagnosing bone infections but can be misleading for hip prostheses. This study found its sensitivity for hip prosthesis infections to be 41%, with 100% specificity.
Area of Science:
- Nuclear Medicine
- Orthopedic Surgery
- Infectious Diseases
Background:
- Labelled leukocyte scintigraphy is widely used for diagnosing bone infections.
- Its accuracy can be compromised in the presence of orthopedic implants, particularly hip prostheses.
- Evaluating the utility of this imaging modality in specific clinical scenarios is crucial.
Purpose of the Study:
- To assess the diagnostic performance of labelled leukocyte scintigraphy in suspected hip prosthesis infections.
- To determine the sensitivity and specificity of this imaging technique for detecting infection around hip implants.
- To compare scintigraphy findings with clinical, biological, and radiological data.
Main Methods:
- Retrospective analysis of 62 labelled leukocyte scintigraphy procedures.
- Patients with suspected hip prosthesis infection were included.
- Results were correlated with clinical, biological, radiological factors, and patient follow-up.
Main Results:
- The sensitivity of labelled leukocyte scintigraphy for hip prosthesis infection was 41%.
- The specificity of the test was determined to be 100%.
- The study highlights potential limitations and diagnostic challenges.
Conclusions:
- Labelled leukocyte scintigraphy has limited sensitivity but high specificity for diagnosing hip prosthesis infections.
- The test can be deceptive in this specific patient population.
- Careful interpretation alongside other diagnostic factors is recommended.