However, it is not osteoporosis, or thinning of the bones, that is the problem, but the risk of
fracture, especially in the elderly. In the US, some 40% of women
and 13% of men may sustain a
fracture after age 50. More than 1.3 million fractures annually are attributed to osteoporosis. Among them are some 500,000 vertebral or spine fractures, 250,000 hip fractures, and 240,000 wrist fractures.