A Survey of Bone Mineral Density in Women After 40 Years Old in Changsha Countryside / 中国医师杂志

ABSTRACT

Objective To investigate the age related bone mineral density and the prevalence of osteoporosis at different skeletal sites in old women(age super-40 years) in Changsha countryside. Methods 627 healthy women from Changsha countryside (40 to 85 years)were involved. BMD measurements were taken at various sites,included anteroposterior and lateral lumbar spine, hip and forearm by Hologic QDR4500A dual energy X-ray absorptiometry (DEXA). Data were analyzed in-groups divided by an interval of every 5 years of age.Results ⑴Compared with 40 years～ old women, 75～85 years old women's total bone loss rates were highest at the word's triangle (56 62%) and lowest at the 1/3 site of the distal forearm (29 82～31 43%). ⑵The rank of osteoporosis detection rate from high to low after age 40 was lateral lumbar spine (38 72%), forearm, ward's triangle (27 52%) and anteroposterior lumbar spine ; femur neck and major trochanter (8 28% and 8 85%).⑶the prevalence of osteoporosis at least at one site of these women were(1 127?1 3)% in the age of 40～, (2 3?3 99)% in the age of 45～, (10 16?9 2)% in the age of 50～, (28 85?15 63)% in the age of 55～,(46 55?21 35)% in the age of 60～, (63 31?20 62)% in the age of 65～, (76 67?17 5)% in the age of 70～, (77 07?17 67)% in the age of 75～85. Before 60 years old the prevalence of osteoporosis stands out at lumbar spine (P