Vol 80, No 6 (2009)
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Efficacy of densitometry and fracture risk assessment tool FRAX in making therapeutic decisions in osteoporosis – a study on female patients of University of Medical Sciences Endocrinology Outpatient Clinic

Wanda Horst-Sikorska, Ewelina Gowin, Michał Michalak, Joanna Dytfeld, Magdalena Ignaszak-Szczepaniak
Ginekol Pol 2009;80(6).

Abstract

Abstract Introduction: : Contemporary understanding of osteoporosis is based on the assessment of fracture risk. Evaluation of clinical risk factors of fracture with or without densitometry (DEXA) allows to identify patients requiring pharmacological treatment. Aim: The aim of the study was to estimate the usefulness of DEXA in assessment of fracture risk in women >50 years old. Materials and methods: In 296 previously untreated for osteoporosis women of Endocrinology Outpatient Clinic aged 50 to 85 years (mean 68,8+/-7,8 ) 10-year fracture risk using FRAX tool was computed from clinical risk factors alone (FRAX, FRAX hip) and after measurement of BMD (FRAX BMD). Then FRAX parameters were compared in 4 age categories. Fracture risk was confronted with therapeutic thresholds proposed in Poland. Results: 10-year fracture risk by FRAX increased with age. The most frequent risk factors were: previous fracture and family history of fractures. FRAX and FRAX BMD were significantly different in the 50-59 year-olds and 60-69 year-olds. Statistically significant difference was found for FRAX hip and FRAX hip BMD in 50-59 year old women. FRAX and FRAXhip were better predictors of fractures than FRAX BMD in patients >80 years old. In 50-79 year old women qualification for treatment was more effective when risk was assessed according to FRAX BMD. DEXA performance did not change the number of women over 80 who were eligible for treatment according to FRAX. Conclusions: BMD is crucial for the 10-year risk assessment in 50-69 year-olds without previous fracture, as an increasing number of patients need therapy. In >80 year old women clinical risk factors alone are sufficient to make therapeutic decisions. DEXA in these women has no influence on the risk of future fractures, including hip fracture. In 60-69 women with previous fracture DEXA is a good predictor for future fractures but has no value as far as therapeutic decisions are concerned.

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