Analysis of bone mineral density in 771 healthy people in Chengdu

Objective To analyze the changes of the bone mineral density (BMD) in the healthy population in Chengdu and define the normal range of BMD for diagnosis and treatment of osteoporosis. Methods (1) BMDs of lumbar spine and proximal femur were measured by dual energy X-ray ab-sorptiometry (DXA) in 771 normal subjects (300 men and 471 women) aged 20-100. (2)BMD values were analyzed by different age group in 10 years interval. Results The peak bone mass (PBM) of male and female were in the age groups of 30-39 and 20-29, respectively; BMDs declined with the age increase, except the 70-79 age-group in male; A remarkable decrease in BMD was shown in the 50-59 age group in women. Conclusions This study provides references in diagnosing and managing osteoporosis; BMD of the femur should be taken into account while analyzing the BMD of vertebrae in men; Prevention and treatment of osteoporosis are very important in both women after 50 years old and men.