Abstract
To evaluate whether metatarsal fracture in postmenopausal women can be related to osteoporosis, a sample of 113 postmenopausal women with metatarsal fracture due to minor trauma were recruited. Demographic and clinical data were compared with a control group of 339 healthy age-matched women and with a sample of 224 women with wrist fracture. In all women, bone mineral density (BMD) was measured at the lumbar spine by dual-energy X-ray absorptiometry. The average age of the metatarsal fracture group was slightly lower than that of the wrist fracture group (56.9 vs 58.4 years). Women with metatarsal and wrist fracture had a significantly higher age at menarche, lower age at menopause and lower body mass index when compared with controls. In both fracture groups BMD was significantly lower compared with controls. In stepwise logistic regression models, factors associated with metatarsal fracture risk were age at menopause (odds ratio [OR] 0.86; 95% confidence interval [CI] 0.81-0.92) and BMD (OR per -1 SD 2.44; CI 1.92-3.11). Factors associated with wrist fracture risk included age at menopause (OR 0.89; CI 0.84-0.93) and BMD (OR per -1 SD 2.65; CI 2.17-3.24). The similarities existing in risk factors and their estimates between a well-recognized osteoporotic fracture such as wrist fracture and metatarsal fracture, support the hypothesis that the latter can be included among osteoporotic fractures.
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