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Introduction: Osteoporosis is a skeletal disease characterized by low bone mass, which increases the risk of fractures and can arise from primary or secondary causes. The aim of this study is to evaluate the frequency and causes of secondary osteoporosis diagnosis in patients presenting to our clinic, as well as to assess the clinical characteristics and treatment responses of these patients. Materials and Methods: Seventy patients with secondary osteoporosis, who were followed and treated for at least two years due to chronic disease, were included in the study. The clinical characteristics, comorbidities, medications used, laboratory tests, Dual X-ray Absorptiometry (DXA) scans, magnetic resonance imaging results, and treatment protocols of the patients were evaluated. Results: The mean age of the patients was 10.37±3.81 years. The mean age at diagnosis of the primary disease (chronic illness) was 4.47±3.54 years. The mean duration for the development of osteoporosis was 5.76±4.31 years. Among the cases, 21 (30%) had oncological, 15 (21.5%) had rheumatological, 11 (15.7%) had nephrological, 11 (15.7%) had hematological, 4 (5.7%) had neurological diseases, and 8 (11.4%) had other diseases. Of the patients, 35 (50%) had a history of steroid use, 16 (22.9%) used both steroids and methotrexate (MTX), 10 (14.3%) used MTX, and 9 (12.9%) used antiepileptic drugs. The mean vertebral DXA Z-score before treatment was -3.06±1.05, while the DXA Z-scores at the 1st and 2nd years of treatment were -2.51±1.09 and -2.16±1.15, respectively. A significant difference was found between the pre-treatment and 1st and 2nd year DXA Z-scores (p

The aim of the study was to compare the T-scores of quantitative ultrasound (QUS) of the calcaneus with those of dual-energy X-ray absorptiometry (DXA) of the lumbar spine and hip in men. We studied on sixty-four male patients (mean age 52.47 + 16.51 years). BMD T-score at the lumbar spine and femoral neck correlated positively with QUS T-score of the calcaneus (r=0.258, p