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Velocity of ultrasound at the patella: Influence of age, menopause and estrogen replacement therapy

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Abstract

Determination of apparent velocity of ultrasound (AVU) in bone has been proposed as a valuable tool for discriminating between normal and osteoporotic women. We have studied the influence of age, menopause and estrogen replacement therapy (ERT) on AVU at the patella in a large sample of pre- and postmenopausal women. Three hundred and eighteen woman aged 40–60 year participated in the study (112 women were premenopausal, 21 were perimenopausal and 185 were postmenopausal of whom 110 had received ERT for a minimum of 1 year). AVU was determined as the mean of four measurements at each patella using a Signet instrument (Osteo-Technology, Framingham, MA). An age-dependent decline in AVU was observed only after menopause (r=−0.33,p=0.0055); in premenopausal women there was a slight but not significant decrease in AVU with age (r=−0.12,p>0.05). AVU was significantly lower in postmenopausal women compared with premenopausal women (1882±84 m/s vs 1961±73 m/s,p<0.05). ERT prevented the menopause-related fall in AVU. There was a significant positive correlation between the duration of ERT and AVU measurements. Our findings demonstrate a pronounced influence of estrogens on AVU at the patella, supporting the concept of a protective role of ERT in bone stability. AVU measurements therefore merit further investigation as an inexpensive method for predicting fracture risk that does not expose the subject to radiation.

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Lehmann, R., Wapniarz, M., Kvasnicka, H.M. et al. Velocity of ultrasound at the patella: Influence of age, menopause and estrogen replacement therapy. Osteoporosis Int 3, 308–313 (1993). https://doi.org/10.1007/BF01637316

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  • DOI: https://doi.org/10.1007/BF01637316

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