11/15/2010

What is osteoporosis ?

Definition and epidemiology of osteoporosis.


Definition of osteoporosis can be divided as follows.


 1. Definition of conceptual (Conceptual definition).

In the year 2534 the conclusion of the Conference Consensus Development Conference (1) provides definitions.That of osteoporosis is "A disease of bone with low bone mass and the deterioration of the structure.(Microarchitectural deterioration) bones fragile And increase the risk of broken bones. " 


In the year 2543 National Institute of Health (NIH) of the United States (2) has changed the definition.Of osteoporosis is as follows."It is a disease of the bone strength of the bones (Bone strength) decreased to increase the impact.Risk of fractures. " 
The strength of the bones  in this definition contains two main parts: 
Bone density and quality of bone (Bone quality).


2. Criteria for monitoring and research  

In the year 2537 the World Health Organization (WHO) has set criteria.In the diagnosis of osteoporosis on the bone mineral density (BMD) lower than the average distance maximize bone mass in young (Peak young adult mean) than -2.5.standard deviation (BMD <-2.5 standard deviation (SD) with the cut-off point that more than 30 percent of women in menopause are diagnosed with the disease. 

Osteoporosis, which meet the risk of fractures in various parts. All evil, life expectancy (Life time risk of fractures) in the women's white (Caucasian), aged 50 years and over . 
Can see that the World Health Organization Bone density as the sole criterion for diagnosis 
of osteoporosis.
 
However, the mechanism of fracture depends on 2 main factors is
 strong bones (Bone strength) and the severity of the weather proof (Severity of trauma). 
Bone density or bone mass is just one of the factors involved the strength of bone.