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Influence of age and body weight on spine and femur bone mineral density in U.S. white men
Author(s) -
Mazess Richard B.,
Barden Howard S.,
Drinka Paul J.,
Bauwens Steven F.,
Orwoll Eric S.,
Bell Norman H.
Publication year - 1990
Publication title -
journal of bone and mineral research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.882
H-Index - 241
eISSN - 1523-4681
pISSN - 0884-0431
DOI - 10.1002/jbmr.5650050614
Subject(s) - bone mineral , medicine , femoral neck , femur , skeleton (computer programming) , bone density , anatomy , lumbar spine , osteoporosis , surgery
Bone mineral density (BMD) was measured in normal white males using 153 Gd dual‐photon absorptiometry. Measurements were made on the lumbar spine (n = 315) and on the proximal femur (n = 282) utilizing three regions of interest. There was a small but significant age‐related decrease in spinal BMD ( r = ‐0.11; ‐0.001 g/cm 2 per year) and trochanteric BMD ( r = 0.27; ‐0.002 g/cm 2 per year). The BMD of the other femoral sites decreased more rapidly; the femoral neck ( r = ‐0.58; ‐0.005 g/cm 2 per year) and Ward's triangle ( r = ‐0.69; ‐0.007 g/cm 2 per year) declined by about 21 and 34%, respectively, from age 20 to age 70. These femoral BMD decreases were three to four times greater than those usually seen in the peripheral skeleton in males but less than the decreases of 25‐30 and 40% in the femoral neck and Ward's triangle of white females. This pattern of aging bone loss may partially explain the paucity of spine fractures and the lower incidence of hip fractures in males versus females.