The Thoracic and Lumbar Spine in Severe Juvenile Idiopathic Arthritis: Magnetic Resonance Imaging Analysis in 50 Children - 08/12/11
, Kati Markula-Patjas, MD 2, 4, Liisa Kerttula, MD, PhD 1, Irma Soini, MD, PhD 3, Helena Valta, MD, PhD 4, Outi Mäkitie, MD, PhD 4
Reprint requests: Sanna Toiviainen-Salo, MD, PhD, Department of Radiology, University of Helsinki and HUS Radiology (Medical Imaging Center), PO Box 340 FIN-00029 HUS, Helsinki, Finland.Abstract |
Objective |
To determine the prevalence of vertebral fractures as a complication of juvenile idiopathic arthritis (JIA).
Study design |
This cross-sectional study evaluated the prevalence and characteristics of spinal abnormalities in 50 children (aged 7.0-18.7 years) with treatment-resistant JIA by magnetic resonance imaging. Vertebral deformities, endplate irregularities, intervertebral disc involvement, spinal canal, neural foramina, and back muscles were analyzed and correlated with clinical characteristics and bone mineral density.
Results |
Magnetic resonance imaging revealed various abnormalities in 31 patients (62%). Vertebral compression was seen in 28%, disc degeneration in 46%, protrusions in 14%, prolapses in 4%, endplate changes in 26%, and anterior vertebral corner lesions in 16%. Two patients (4%) had mild spinal canal narrowing without medullar involvement; none had neural root compression. Six patients (12%) had mild back muscle atrophy. No correlation was observed between spinal fractures or other vertebral changes and disease activity or duration, pain or bone mineral density; patients with spinal fractures tended to have a higher recent glucocorticoid exposure (P=.086).
Conclusion |
Children with severe JIA have a high prevalence of compression fractures and other vertebral, endplate, and disc abnormalities in the thoracic and lumbar spine.
Le texte complet de cet article est disponible en PDF.Mots-clés : aBMD, BMI, CSF, DXA, GC, JIA, MRI
Plan
| Supported by the Foundation for Pediatric Research (to O.M. and S.T-S.), Maud Kuistila Foundation (to S.T-S.), Helsinki University Hospital research funds (to L.K.), Rheumatism Foundation Hospital research funds (to K.M-P.), The Academy of Finland (to O.M.). The authors declare no conflicts of interest. |
Vol 160 - N° 1
P. 140-146 - janvier 2012 Retour au numéro
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