Association of Sun-Protective Behaviors With Bone Mineral Density and Osteoporotic Bone Fractures in US Adults

Author(s):  
Mohsen Afarideh ◽  
Julio C. Sartori-Valinotti ◽  
Megha M. Tollefson
2018 ◽  
Vol 21 (2) ◽  
pp. 227-235 ◽  
Author(s):  
Leticia S. Souza ◽  
Neuza Felix Rochette ◽  
Diego França Pedrosa ◽  
Rafaella P. Lopes Magnago ◽  
Teodiano B. Freire Filho ◽  
...  

2012 ◽  
Vol 57 (No. 12) ◽  
pp. 573-580 ◽  
Author(s):  
A. Charuta ◽  
R.G. Cooper ◽  
M. Pierzchała ◽  
J.O. Horbańczuk

Changes in the volumetric bone mineral density (vBMD) and bone mineral content (BMC) of tibiotarsal bones of growing turkeys as affected by birds&rsquo; age, sex, and within-the-bone location, respectively, were determined by computed tomography. The research was performed on 165 heavy-type BIG 6 turkeys reared between weeks (wk) 3&ndash;16 of age. The computed tomography (pQCT) measurement, conducted at 18&nbsp;and 50% of the bone length, comprised a bone fragment which was 0.07 mm thick for the compact and the spongious substance collectively. It should be noted that the diaphyses of the tibiotarsal bones in turkeys (580 mg/cm<sup>3</sup>) had greater vBMD than the proximal metaphyses (300 mg/cm<sup>3</sup>), (P &le; 0.001). BMC was higher in metaphyses for both sexes. Significant differences between the BMC of the metaphyses and the diaphyses were observed in males and females at wk 3 (P &le; 0.01), 6 (P &le; 0.05), and 9 (P &le; 0.001), and at wk 3 (P &le; 0.05) and 12 (P &le; 0.01), respectively. vBMD in the diaphyses gradually attenuated with age for both sexes, from 688 mg/cm<sup>3</sup> (wk 3) to 532 mg/cm<sup>3</sup> (wk 16). vBMD of the metaphyses was constant in females, but in males it achieved maximum values of 350 mg/cm<sup>3 </sup>at wk 6 and 12 and minimum of 260 mg/cm<sup>3 </sup>at wk 9 and 16. Correlations between body weight (BW) and vBMD of the diaphyses were observed in males (r = &ndash;0.85, P &le; 0.001) and females (r = &ndash;0.52, P &le; 0.01). It can be concluded that vBMD loss in diaphyses diminished bone-breaking strength leading in investigated turkeys to deformities and bone fractures.


1995 ◽  
Vol 54 (10) ◽  
pp. 807-810 ◽  
Author(s):  
G G Riario-Sforza ◽  
C Incorvaia ◽  
A Scazzoso ◽  
T Travisi ◽  
F Nitti ◽  
...  

Author(s):  
Xuanliang Neil Dong ◽  
Patricia Cussen ◽  
Timothy Lowe ◽  
David Di Paolo ◽  
Joyce Ballard

Hip fractures are among the most common types of osteoporotic fractures that affect one in three women and one in six men over the age of 50 [1]. It is well known that loss of bone mass, quantified by bone mineral density using Dual-energy X-ray Absorptiometry (DXA), is associated with the increasing risk of bone fractures. However, bone mineral density (BMD) alone cannot fully explain changes in fracture risks [2, 3]. In particular, BMD is not able to predict fracture risks for women with osteopenia, in which a BMD T-score is between −1.0 and −2.5. This suggests additional factors (i.e., bone quality) should be considered in predicting fracture risks [4].


Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1546
Author(s):  
Christin Habig ◽  
Martina Henning ◽  
Ulrich Baulain ◽  
Simon Jansen ◽  
Armin Manfred Scholz ◽  
...  

Keel bone damage is an important animal welfare problem in laying hens. Two generations of four layer lines, differing in phylogenetic background and performance level and kept in single cages or floor pens were weighed and scored for keel bone deformities (KBD) during the laying period. KBD, keel bone fractures (KBF) and the bone mineral density (BMD) of the keels were assessed post mortem. For BMD, relationships to laying performance and body growth were estimated. Caged hens showed more deformities, but fewer fractures and a lower BMD of the keel bone than floor-housed hens. White-egg layers had a lower BMD (0.140–0.165 g/cm2) and more KBD than brown-egg layers (0.179–0.184 g/cm2). KBF occurred more often in the high-performing lines than the moderate-performing ones. However, in the high-performing lines, BMD was positively related to total egg number from 18 to 29 weeks of age. The adult body weight derived from fitted growth curves (Gompertz function) had a significant effect (p < 0.001) on keels’ BMD. The study contributes to the understanding of predisposing factors for keel bone damage in laying hens. It showed that the growth rate has a rather subordinate effect on keels’ BMD, while the BMD itself greatly affects KBD.


2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Jasmin S. Nurković ◽  
Pavle Petković ◽  
Danijela Tiosavljević ◽  
Radiša Vojinović

Introduction. Due to concerns about cumulative radiation exposure in the pediatric population, it is not standard practice to perform dual-energy X-ray absorptiometry (DXA) analysis in the diagnostic process of musculoskeletal disorders, such as cerebral palsy (CP). This study aimed to evaluate the bone mineral density (BMD) in children with CP and the ethical justification of applying DXA analysis in these children. Material and Methods. In this monocentric retrospective analysis, data were collected from children and adolescents with CP who were treated for a primary illness for three years. A clinical examination, which included a DXA analysis, recommended by the multidisciplinary team, was performed. After applying inclusion and exclusion criteria, 60 scans remained for statistical analysis. BMD and Z-scores for the lumbar spine (LS), and hip right and left femoral neck (RFN and LFN, respectively), and total hip (TH) were recorded. Results. The average age of children with CP when DXA analysis was first performed was about 7 years. The BMD (mean±SD) at LS (LS-BMD) of all patients was 0.612±0.12, at RFN 0.555±0.11, at LFN 0.572±0.1, and at TH (TH-BMD) 0.581±0.13. The values of the Z-score (mean±SD) at LS of all patients were −2.5±0.22, at RFN −2.2±0.21, at LFN -2.25 (SD=0.2), and at TH -2.3 (SD=0.23). There was no statistical significance between age and gender; however, BMI, walking ability, fracture history, and pattern of CP had a significant impact on BMD and Z-score values of these children. Conclusion. The results of our study clearly indicate that children with CP have a higher risk of low BMD, osteoporosis, and bone fractures, which makes it ethically justifiable to perform the DXA analysis in these children.


2012 ◽  
Vol 97 (7) ◽  
pp. E1234-E1240 ◽  
Author(s):  
Olivia Trummer ◽  
Verena Schwetz ◽  
Daniela Walter-Finell ◽  
Elisabeth Lerchbaum ◽  
Wilfried Renner ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document