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KMID : 0438420110180010015
Korean Journal of Bone Metabolism
2011 Volume.18 No. 1 p.15 ~ p.21
Osteoporosis Medication Treatment Thresholds for Patients with a Distal Radius Fracture as Determined using Bone Mineral Density and the Fracture Risk Assessment Tool
Park Jae-Woo

Huh Jung-Kyu
Kim Joon-Yub
Oh Joo-Han
Baek Goo-Hyun
Gong Hyun-Sik
Abstract
Objective: To compare the treatment thresholds for osteoporosis medication based on bone mineral density (BMD) results and fracture risk assessment tool (FRAX) risks in patients with a distal radius fracture.

Methods: The data of 116 consecutive women aged 50~89 years (mean 64.5 years) with a distal radius fracture were collated to identify clinical risk factors, which were inserted into the FRAX algorithm to calculate 10-year fracture risks. Proportions of patients indicated for osteoporosis medication based on BMD alone and based on FRAX risks were determined. Sensitivity estimation was done with FRAX plus BMD as a gold standard measurement for osteoporosis treatment.

Results: Of the 116 patients, 38% needed osteoporosis medication based on BMD alone, and 41% were indicated for treatment based on FRAX plus BMD. These proportions were not significantly different (P = 0.481). However, 56% of patients were indicated for treatment based on FRAX excluding BMD, which was significantly larger than the proportion determined by BMD alone (P = 0.001) or FRAX plus BMD (P = 0.003). Sensitivity, specificity, positive predictive value, negative predictive value for BMD alone were 75%, 93%, 90%, 82% and those for FRAX without BMD were 83%, 70%, 69%, 84%.

Conslusion: No difference was found in the proportion of patients that need osteoporosis medication based on BMD results alone and FRAX plus BMD risks, suggesting BMD measurement can be sufficient to detect candidates for osteoporosis medication in patients with a distal radius fracture. FRAX excluding BMD may include too many patients that do not need osteoporosis treatment.
KEYWORD
Bone Density, Distal radius fracture, Fracture risk assessment tool, Osteoporosis
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