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Radiological and Magnetic Resonance Imaging Findings in the Sacroiliac Joints in Patients with early Spondylarthropathy

Author(s): Reijo Luukkainen | Kimmo O.J. Virtanen | Pekka Luukkainen

Journal: Clinical Medicine : Arthritis and Musculoskeletal Disorders
ISSN 1178-1149

Volume: 1;
Start page: 59;
Date: 2008;
Original page

Keywords: early | spondylarthropathy | LBP | radiography | MRI

Objective: To compare the radiological (X-ray) and magnetic resonance imaging (MRI) findings in the sacroiliac (SI) joints in patients with early spondylarthropathy (SpA).Methods: Forty consecutive HLA B27 antigen positive patients with early SpA and inflammatory low back pain (LBP) were studied. Their SI joints were investigated by posterior anterior plain X-ray and MRI.Results: The X-ray and MRI examinations gave similar results in the SI joints in 24 patients, whereas they differed in 16, this difference being significant (p = 0.007). In those 16 patients, in whom the findings differed, the X-ray findings were normal but MRI showed sacroiliitis which was bilateral in 13 and unilateral in 3 patients. The kappa coefficient between these investigations was 0.346, showing poor agreement.Conclusion: These results indicate that MRI may considerably improve the diagnosis of sacroiliitis in HLA B27 antigen positive patients with early SpA and inflammatory LBP.

Mănăstirea Frăsinei
Manastirea Frasinei


Tango Jona
Tangokurs Rapperswil-Jona