Osteoporosis and Reduction of Bone Mass by Age and Sex
Abstract
The bone is a living tissue constantly changing. From the moment of birth until the age of adulthood bone tissue grows, develops and strengthens. This process reached its maximum in the third decade of life known as peak bone mass. Over the years bone mass falters through resorption while new bone tissue replaces the previous one. This process is known as remodeling. In osteoporosis the process of resorption exceeds that of replacment with the end of mass reduction and weakening of bone quality with increased propensity for fractures. Types of bone loss by age and sex were studied in 287 normal subjects (205 women and 82 men) from age 20 to 78 years old and 176 women and 39 men with Colles fractures and colli humeri with osteoporotic nature. Bone mineral density was measured by DEXA Lunar GE. In normal women the reduction of bone mass starts at a young age and is linear. Loss of bone mass is noted at age 50 and it is noted up to 65, falling after age 65. Total loss of bone mass resulting 47%. In normal men reduction in bone mass is smaller. Bone mineral density in patients with osteoporosis was significantly lower than that in normal subjects in relation to age and sex.
Keywords: bone loss, tissue, age groups, osteoporosis, etc.
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