[The bone mineral density change with aging of women and usefulness of single energy X-ray absorptiometry for measurement of bone mineral content].
The calcaneus bone mineral density of 473 women was measured by single photon absorptiometry (SPA) and the vertebrae bone mineral density of 198 women was measured by dual energy X-ray absorptiometry (DEXA). The calcaneus bone mineral density of women starts decreasing at age 30, and the rate of decrease accelerates after the age of 50. The vertebrae bone mineral density starts decreasing at the age of 35, and a conspicuous decrease can be seen after the age of 50 as well. Because bone deterioration of Japanese women is thought to start earlier than in Europeans and Americans, the necessity of osteoporosis screening before menopause was suggested. A high positive correlation (r = 0.804) between calcaneus bone mineral density and vertebrae bone mineral density was found, and a high degree of precision of SXA was shown.
Yamada
H
H
Department of Obstetrics and Gynecology, Fukushima Medical College.
Hoshi
K
K
Tsukikawa
S
S
Sato
A
A
D015502:Absorptiometry, Photon; D000328:Adult; D000368:Aged; D000375:Aging / Q000378:metabolism*; D015519:Bone Density; D002111:Calcaneus / Q000378:metabolism; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae / Q000378:metabolism; D008875:Middle Aged