Osteopenia in men with mild and severe ankylosing spondylitis |
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Authors: | H. J. Baek S. W. Kang Y. J. Lee K. C. Shin E. B. Lee C. D. Yoo Y. W. Song |
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Affiliation: | (1) Division of Rheumatology, Department of Internal Medicine, Gachon Medical School, Inchon, Korea;(2) Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, 28 Yungun-dong, Chongno-gu, 110-744 Seoul , Korea |
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Abstract: | We investigated the frequency and distribution of osteopenia according to the clinical severity in ankylosing spondylitis (AS). Bone mass was measured in men with mild (n=45) and severe AS (n=31) with dual-energy X-ray absorptiometry (DEXA). Definition of clinical severity was based on the Schobers test. Osteopenia was commonly detected (48% in mild AS and 39% severe AS) and, in mild disease, more frequently observed at the lumbar spine than any of the proximal femur sites. In severe AS, however, the frequency of osteopenia at the femoral neck and Wards triangle was as high as at the lumbar spine. Both bone mineral density and T-scores in severe disease were lower than in mild disease at the femur neck, Wards triangle, and total proximal femur, but not in the lumbar spine. The progression of osteopenia may be reflected more reliably at proximal femur sites than at the lumbar spine. |
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Keywords: | Ankylosing spondylitis Bone mineral density Osteopenia Osteoporosis |
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