The reliability of the clinical examination for detecting Baker's cyst in asymptomatic fossa
Article first published online: 28 MAY 2013
© 2013 Asia Pacific League of Associations for Rheumatology and Wiley Publishing Asia Pty Ltd
International Journal of Rheumatic Diseases
Volume 17, Issue 2, pages 204–209, February 2014
How to Cite
Akgul, O., Guldeste, Z. and Ozgocmen, S. (2014), The reliability of the clinical examination for detecting Baker's cyst in asymptomatic fossa. International Journal of Rheumatic Diseases, 17: 204–209. doi: 10.1111/1756-185X.12095
- Issue published online: 27 FEB 2014
- Article first published online: 28 MAY 2013
- Baker's cyst;
- clinical aspects;
To compare physical examination and ultrasonographic (US) examination for detecting Baker's cyst (BC) in asymptomatic popliteal fossa.
Popliteal fossa was examined in a total of 220 knees in 110 patients with knee pain/osteoarthritis (OA) and non-OA individuals. Clinical examination was performed by two independent physicians and US examination was performed by a third blinded physician.
Examiner A found 25 BC, examiner B found 30 BC in 220 knees examined (κ = 0.35; 95% CI; 0.14–0.56) and inter-observer reliability was moderate. When US examination taken as the reference, receiver operating characteristic analysis revealed an area under the curve of 0.58 (95% CI; 0.51–0.65) for examiner A and 0.57 (95% CI; 0.50–0.64) for examiner B, showing a weak agreement between physical examination and US assessment.
This study demonstrates that many patients may have BCs without any symptoms at the popliteal fossa and clinical examination of the popliteal fossa could not accurately detect BC. US examination of the popliteal fossa should be performed to detect BCs and this may recover the diagnosis.