How to treat the results of bone mineral density measurement?

Bone mineral density examination: namely BMDtests, is the best examination method to determine the health status of bones. Bone mineral density examination can distinguish osteoporosis, prevent the risk of fracture and monitor the therapeutic effect of osteoporosis. Different bone mineral density examination methods can measure the bone mineral density of different parts, such as hip, spine, wrist, fingers, tibia, heel and so on.

The results of bone mineral density examination need to be compared with two standards, "young people's standard" and "peer standard"

Young people's standard: judging by T score, that is, comparing the test results with the average value of healthy young people to determine the fracture risk. The lower the BMD, the higher the fracture risk.

Peer standard: judged by Z score, that is, the test results are compared with the average value of healthy people of the same age and size.

There is a standard deviation (SD) between the measurement results of BMD and the data of healthy young people. According to WHO diagnostic criteria, BMD is considered normal if the T value is within the "standard" range. Who defines osteoporosis based on bone mineral density.

Normal: Bone mineral density is within 1SD of the average value of young people (+1 ~- 1SD).

Low bone density: the bone density is lower than the average of young people (1 ~ 2.5 SD).

Osteoporosis: the bone mineral density is 2.5SD lower than the average of young people (lower than -2.5SD).

Severe osteoporosis: the bone mineral density is lower than the average level of young people by 2.5SD, accompanied by one or more osteoporotic fractures.