Tadashi Okano1, Kentaro Inui1, Masahiro Tada2, Yuko Sugioka3, Kenji Mamoto1, Shigeyuki Wakitani4, Tatsuya Koike3,5, Hiroaki Nakamura1. 1. a Department of Orthopaedic Surgery , Osaka City University Medical School , Osaka , Japan. 2. b Department of Orthopaedic Surgery , Osaka City General Hospital , Osaka , Japan. 3. c Center for Senile Degenerative Disorders (CSDD), Osaka City University Medical School , Osaka , Japan. 4. d Department of Health and Sports Sciences , Mukogawa Women's University , Hyogo , Japan , and. 5. e Shirahama Foundation for Health and Welfare , Search Institute for Bone and Arthritis Disease (SINBAD) , Wakayama , Japan.
Abstract
OBJECTIVES: Osteoporosis is one of the complications in patients with rheumatoid arthritis (RA). In this study, we researched the morbidity of existing vertebral fractures and the risk factors for vertebral fractures in patients with RA. METHODS: This study included 413 participants, 208 patients with RA, and 205 age- and sex-matched controls without RA. Clinical data, radiographic assessment of vertebral fracture from T4 to L4 in thoracic and lumber spine, bone mineral density (BMD), and bone metabolic markers (BMM) were analyzed. RESULTS: Vertebral fractures were observed more frequently, severe and multiple in patients with RA. In the logistic regression analysis, age (adjusted odds ratios (OR): 1.07, 95% confidence interval (CI): 1.04-1.09) and RA (adjusted OR: 1.72, 95% CI: 1.04-2.83) were risk factors for existing vertebral fracture. Moreover, two bone matrix-related markers, undercarboxylated osteocalcin (ucOC) (adjusted OR: 1.68, 95% CI: 1.02-2.78), and urinary pentocidine (adjusted OR: 2.51, 95% CI: 1.48-4.24) were associated with existing vertebral fracture. CONCLUSIONS: High frequent, multiple, and severe vertebral fractures were found in patients with RA compared to the controls. Low bone quality might be the cause of the frequent prevalence of vertebral fracture in patients with RA.
OBJECTIVES:Osteoporosis is one of the complications in patients with rheumatoid arthritis (RA). In this study, we researched the morbidity of existing vertebral fractures and the risk factors for vertebral fractures in patients with RA. METHODS: This study included 413 participants, 208 patients with RA, and 205 age- and sex-matched controls without RA. Clinical data, radiographic assessment of vertebral fracture from T4 to L4 in thoracic and lumber spine, bone mineral density (BMD), and bone metabolic markers (BMM) were analyzed. RESULTS:Vertebral fractures were observed more frequently, severe and multiple in patients with RA. In the logistic regression analysis, age (adjusted odds ratios (OR): 1.07, 95% confidence interval (CI): 1.04-1.09) and RA (adjusted OR: 1.72, 95% CI: 1.04-2.83) were risk factors for existing vertebral fracture. Moreover, two bone matrix-related markers, undercarboxylated osteocalcin (ucOC) (adjusted OR: 1.68, 95% CI: 1.02-2.78), and urinary pentocidine (adjusted OR: 2.51, 95% CI: 1.48-4.24) were associated with existing vertebral fracture. CONCLUSIONS: High frequent, multiple, and severe vertebral fractures were found in patients with RA compared to the controls. Low bone quality might be the cause of the frequent prevalence of vertebral fracture in patients with RA.
Entities:
Keywords:
Bone mineral density; Bone quality; Osteoporosis; Rheumatoid arthritis; Vertebral fracture
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