Related Experiment Videos
Osteoporosis and vertebral fractures in men aged 60-74 years
Morten Frost1, Kristian Wraae, Bo Abrahamsen
1Department of Endocrinology, Odense University Hospital, Kloevervaenget 6, Odense 5000, Denmark. giltay@dds.nl
Background:
limited information on the prevalence of osteoporosis and VFxs in men in high-risk populations is available. The choice of reference values for dual X-ray absorptiometry (DXA) is debated. We evaluated the prevalence of osteoporosis and vertebral deformities in a population-based sample of men.
Methods:
bone mineral density (BMD) was measured and vertebral deformities assessed using DXA and VFx assessment (VFA), respectively, in a random sample of 600 Danish men aged 60-74 years. Osteoporosis was defined as a T-score of -2.5 or less.
Results:
the study population was comparable with the background population with regard to age, body mass index and co-morbidity. Osteoporosis was diagnosed in less than 1% of the participants at inclusion. Using Danish and NHANES III reference data, 10.2 and 11.5% of the study population had osteoporosis, respectively. In all, 6.3% participants had at least one VFx. BMD was significantly lower in participants with vertebral deformities, but only 24% of these cases had osteoporosis.
Conclusions:
osteoporosis and VFxs are prevalent in men aged 60-74 years. Although the majority of deformities were present in individuals without osteoporosis, BMD was lower in patients with VFxs at all sites investigated. Male osteoporosis was markedly underdiagnosed.
Related Concept Videos
Bone Disorders
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Menopause
Changes in the Appendicular Skeleton with Age
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Bone Remodeling
Role of Vitamins in Maintaining Bone Health
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
Osteoclasts in Bone Remodeling