Abstract
Summary Using combined dual-energy X-ray absorptiometry (DXA) and quantitative computed tomography, we demonstrate that men matched with women for femoral neck (FN) areal bone mineral density (aBMD) have lower volumetric BMD (vBMD), higher bone cross-sectional area, and relatively similar values for finite element (FE)-derived bone strength. Introduction aBMD by DXA is widely used to identify patients at risk for osteoporotic fractures. aBMD is influenced by bone size (i.e., matched for vBMD, larger bones have higher aBMD), and increasing evidence indicates that absolute aBMD predicts a similar risk of fracture in men and women. Thus, we sought to define the relationships between FN aBMD (assessed by DXA) and vBMD, bone size, and FE-derived femoral strength obtained from quantitative computed tomography scans in men versus women. Methods We studied men and women aged 40 to 90 years and not on osteoporosis medications. Results In 114 men and 114 women matched for FN aBMD, FN total cross-sectional area was 38% higher (P< 0.0001) and vBMD was 16% lower (P<0.0001) in the men. FE models constructed in a subset of 28 women and 28 men matched for FN aBMD showed relatively similar values for bone strength and the load-to-strength ratio in the two groups. Conclusions In this cohort of young and old men and women from Rochester, MN, USA who are matched by FN aBMD, because of the offsetting effects of bone size and vBMD, femoral strength and the load-to-strength ratio tended to be relatively similar across the sexes.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 155-162 |
| Number of pages | 8 |
| Journal | Osteoporosis International |
| Volume | 23 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2012 |
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Keywords
- Fracture risk
- Gender
- Osteoporosis
ASJC Scopus subject areas
- Endocrinology, Diabetes and Metabolism
Cite this
Relationship of femoral neck areal bone mineral density to volumetric bone mineral density, bone size, and femoral strength in men and women. / Srinivasan, B.; Kopperdahl, D. L.; Amin, Shreyasee; Atkinson, E. J.; Camp, J.; Robb, R. A.; Riggs, B. L.; Orwoll, E. S.; Melton, L. J.; Keaveny, T. M.; Khosla, Sundeep.
In: Osteoporosis International, Vol. 23, No. 1, 01.2012, p. 155-162.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Relationship of femoral neck areal bone mineral density to volumetric bone mineral density, bone size, and femoral strength in men and women
AU - Srinivasan, B.
AU - Kopperdahl, D. L.
AU - Amin, Shreyasee
AU - Atkinson, E. J.
AU - Camp, J.
AU - Robb, R. A.
AU - Riggs, B. L.
AU - Orwoll, E. S.
AU - Melton, L. J.
AU - Keaveny, T. M.
AU - Khosla, Sundeep
PY - 2012/1
Y1 - 2012/1
N2 - Summary Using combined dual-energy X-ray absorptiometry (DXA) and quantitative computed tomography, we demonstrate that men matched with women for femoral neck (FN) areal bone mineral density (aBMD) have lower volumetric BMD (vBMD), higher bone cross-sectional area, and relatively similar values for finite element (FE)-derived bone strength. Introduction aBMD by DXA is widely used to identify patients at risk for osteoporotic fractures. aBMD is influenced by bone size (i.e., matched for vBMD, larger bones have higher aBMD), and increasing evidence indicates that absolute aBMD predicts a similar risk of fracture in men and women. Thus, we sought to define the relationships between FN aBMD (assessed by DXA) and vBMD, bone size, and FE-derived femoral strength obtained from quantitative computed tomography scans in men versus women. Methods We studied men and women aged 40 to 90 years and not on osteoporosis medications. Results In 114 men and 114 women matched for FN aBMD, FN total cross-sectional area was 38% higher (P< 0.0001) and vBMD was 16% lower (P<0.0001) in the men. FE models constructed in a subset of 28 women and 28 men matched for FN aBMD showed relatively similar values for bone strength and the load-to-strength ratio in the two groups. Conclusions In this cohort of young and old men and women from Rochester, MN, USA who are matched by FN aBMD, because of the offsetting effects of bone size and vBMD, femoral strength and the load-to-strength ratio tended to be relatively similar across the sexes.
AB - Summary Using combined dual-energy X-ray absorptiometry (DXA) and quantitative computed tomography, we demonstrate that men matched with women for femoral neck (FN) areal bone mineral density (aBMD) have lower volumetric BMD (vBMD), higher bone cross-sectional area, and relatively similar values for finite element (FE)-derived bone strength. Introduction aBMD by DXA is widely used to identify patients at risk for osteoporotic fractures. aBMD is influenced by bone size (i.e., matched for vBMD, larger bones have higher aBMD), and increasing evidence indicates that absolute aBMD predicts a similar risk of fracture in men and women. Thus, we sought to define the relationships between FN aBMD (assessed by DXA) and vBMD, bone size, and FE-derived femoral strength obtained from quantitative computed tomography scans in men versus women. Methods We studied men and women aged 40 to 90 years and not on osteoporosis medications. Results In 114 men and 114 women matched for FN aBMD, FN total cross-sectional area was 38% higher (P< 0.0001) and vBMD was 16% lower (P<0.0001) in the men. FE models constructed in a subset of 28 women and 28 men matched for FN aBMD showed relatively similar values for bone strength and the load-to-strength ratio in the two groups. Conclusions In this cohort of young and old men and women from Rochester, MN, USA who are matched by FN aBMD, because of the offsetting effects of bone size and vBMD, femoral strength and the load-to-strength ratio tended to be relatively similar across the sexes.
KW - Fracture risk
KW - Gender
KW - Osteoporosis
UR - http://www.scopus.com/inward/record.url?scp=84857361178&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84857361178&partnerID=8YFLogxK
U2 - 10.1007/s00198-011-1822-8
DO - 10.1007/s00198-011-1822-8
M3 - Article
C2 - 22057550
AN - SCOPUS:84857361178
VL - 23
SP - 155
EP - 162
JO - Osteoporosis International
JF - Osteoporosis International
SN - 0937-941X
IS - 1
ER -