Although osteoporosis reduces overall bone mass causing bone fragility, recent studies report that the remaining bone tissue is significantly stiffer. Preliminary studies indicate that alterations in bone tissue mineral content might explain these changes, albeit that other studies report conflicting observations. The objective of this study is to quantify whether the distribution of bone tissu...

OBJECTIVE To estimate how axial rotation of lumbar vertebrae quantitatively affects bone mineral density, as measured by dual energy X-ray absorptiometry in the anteroposterior plane. DESIGN Observational study. SETTING University teaching hospital, Hong Kong. PATIENTS Cadaver lumbar vertebrae (L2 to L4) were removed from four adults. MAIN OUTCOME MEASURES Using dual energy X-ray absorp...

OBJECTIVE To compare bone mineral density in patients with juvenile-onset Systemic lupus erythematosus and healthy controls. PARTICIPANTS Serial bone mineral density measurements in 27 patients with juvenile-onset systemic lupus were compared to 97 healthy age-matched controls. RESULTS All patients with juvenile-onset had low bone mineral density scores at initial assessment that progressed...

OBJECTIVE This study was designed to prospectively examine differential effects of sustained "high" and "low" serum prolactin levels on bone mineral density and peripheral markers of bone metabolism. METHOD A dual-energy X-ray absorptiometer was used to measure bone mineral density. Peripheral markers of bone formation and resorption were used to measure bone metabolism in 14 Caucasian female...

introduction: rheumatoid arthritis (ra) is the most common autoimmune joint disease. osteoporosis is a well-known consequence of ra. objective: the aim of the present study was to determine the interrelationship between radiographic findings and bone mineral density (bmd) in patients with ra. methods: 70 patients with established ra (according to 1987 acr criteria) were included in a cross-sect...

background: osteoporosis is a systemic skeletal disorder characterized by low bone mineral density (bmd) that leads to an increase in bone fragility, causing an individual to be at an increased risk for fractures. asian-indians are at an increased risk for developing osteoporosis. considering the number of asian-indians in the us is rapidly growing, they likely could be an underappreciated popu...

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background: dual-energy x-ray absorptiometry (dxa) is considered the gold standard for non-invasive measurement of bone mass. t-scores and z-scores are used to present the results of bone mass. the present study was designed to evaluate the discordance between t-scores and z-scores calculated at a same level and its relation with age, gender and body mass index (bmi) in a representative sample ...

BACKGROUND The aim of this study was to investigate the influence of body mass index, body weight, lean mass, fat mass, and basal energy expenditure on bone mineral density in postmenopausal women. METHODS This was a cross-sectional, descriptive study of a sample of 50 women, with minimum time since menopause between 1 and 10 years. Bone mineral density was assessed at the lumbar spine (L2-L4...

Malnutrition, particularly protein undernutrition, contributes to the occurrence of osteoporotic fracture by lowering bone mass. In this study, the effects of dietary protein on bone mineral density and body weight in protein undernutrition were compared between gelatin and milk casein. When mice were fed for 10 wk with a low protein diet containing 10(%) casein or 6% casein +4% gelatin, there ...