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However, an imbalance between the resorption and formation of bone occurs as people age, contributing to the development of senile osteoporosis. The aging of cortical and trabecular bones in particular cause the decrease in bone density in the elderly population. [1]
Not only is bone density decreased, but the microarchitecture of bone is also disrupted. The weaker spicules of trabecular bone break ("microcracks"), and are replaced by weaker bone. Common osteoporotic fracture sites, the wrist, the hip, and the spine, have a relatively high trabecular bone to cortical bone ratio.
Osteopenia, known as "low bone mass" or "low bone density", is a condition in which bone mineral density is low. [1] Because their bones are weaker, people with osteopenia may have a higher risk of fractures, and some people may go on to develop osteoporosis. [2] In 2010, 43 million older adults in the US had osteopenia. [3]
She says, “According to the Bone Health and Osteoporosis Foundation, about 10 million Americans have osteoporosis, and about 44 million Americans have low bone density.
A scanner used to measure bone density using dual energy X-ray absorptiometry. Bone density, or bone mineral density, is the amount of bone mineral in bone tissue.The concept is of mass of mineral per volume of bone (relating to density in the physics sense), although clinically it is measured by proxy according to optical density per square centimetre of bone surface upon imaging. [1]
Strength training has a range of health benefits, including counteracting age-related muscle loss (known as sarcopenia) which begins in our mid-30s, as well as boosting bone density.