Abstract
Osteoporosis, a common clinical feature in children affected with Juvenile Rheumatoid Arthritis (JRA), is generally divided into two forms, a localized juxta-articular osteoporosis of the single joints and a generalized reduction of bone mass due to the disease itself, joint involvement and steroid treatment. Recently Dual Energy X-ray Absorptiometry (DEXA) has been suggested for Bone Mineral Density (BMD) measurement. In the present study DEXA has been used to investigate the lumbar spine BMD in JRA patients as compared to healthy children. Our results showed that BMD is reduced in JRA patients (BMD 0.685 g/cm2) when compared to healthy children (BMD 0.722 g/cm2), and it is significantly lower in the group of patients treated with steroids (BMD 0.623 g/cm2) when compared to those treated with nonsteroidal antiinflammatory drugs (BMD 0.710 g/cm2). The analysis of all risk factors of bone loss indicated that steroids represent the only parameter of significant negative correlation with BMD.
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