title: Calcaneus and vertebrae bone mineral density values and fracture threshold.
abstract: The calcaneus bone mineral density values (BMDs) of healthy Japanese women peaked at 20 to 25 years of age with 435 +/- 66 mg/cm2 (mean +/- S.D.), decreased 0.51% on the average every year thereafter until 45 years of age, 1.72% between 45 and 55 years (menopause) and 0.55% thereafter. The vertebrae bone mineral density value peaked at 30 to 35 years of age with 1.06 +/- 0.13 g/cm2 (mean +/- S.D.), decreased 0.67% on the average every year thereafter until 45 years of age, 1.23% between 45 and 55 years (menopause) and 0.70% thereafter. Mean -2.0 S.D. of the peak bone mass was considered appropriate as the fracture threshold for both the calcaneus and vertebra, judging from the BMDs of osteoporosis patients.
authors.affiliation: Department of Obstetrics and Gynecology, Fukushima Medical College.
authors.forename: K
authors.initials: K
authors.lastname: Hoshi
authors.forename: S
authors.initials: S
authors.lastname: Tsukikawa
authors.forename: M
authors.initials: M
authors.lastname: Oowada
authors.forename: K
authors.initials: K
authors.lastname: Igarashi
authors.forename: A
authors.initials: A
authors.lastname: Sato
mesh_terms: D015502:Absorptiometry, Photon; D000328:Adult; D000368:Aged; D015519:Bone Density; D002111:Calcaneus / Q000737:chemistry*; D005260:Female; D050723:Fractures, Bone / Q000209:etiology* / Q000517:prevention & control; D006801:Humans; D007564:Japan; D008159:Lumbar Vertebrae / Q000737:chemistry*; D008875:Middle Aged; D010024:Osteoporosis / Q000378:metabolism*; D012016:Reference Values