Dual Energy X-Ray Absorptiometry (DEXA) in Evaluation of the Proximal Femur after Repair of Proximal Femoral Physeal Fractures in Immature Dogs

1995 ◽  
Vol 08 (03) ◽  
pp. 153-158 ◽  
Author(s):  
D. M. Tillson ◽  
R. M. McLaughlin ◽  
Ph. W. Toll ◽  
D. C. Richardson ◽  
J. K. Roush
Keyword(s):  
Bone Mineral Density ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Dual Energy ◽  
Clinical Findings ◽  
Fracture Repair ◽  
Volumetric Bone Mineral Density ◽  
Mineral Density ◽  
X Ray ◽  
Physeal Fractures

SummaryThin slices of the proximal femora of twelve immature dogs were examined with dual energy x-ray absorptiometry, after surgical creation and repair of proximal femoral physeal fractures. A protocol for the subtraction of microvascular barium sulphate was used to eliminate interference from the barium with the determination of bone mineral content (BMC), bone mineral density (BMD) and volumetric bone mineral density (VBMD). The results showed there was a significant decrease in the BMC (four and eight weeks) and BMD (eight weeks) for the entire proximal femora of the operated side when compared to the non-operated side. Significant decreases were also seen for the BMC of the physeal region at week eight and the VBMD of the metaphyseal area in the two week femora. The findings with DEXA support the clinical findings of femoral neck thinning in proximal femoral physeal fractures that are surgically repaired. The DEXA findings suggest that the quality of the bone of the femoral neck is less as shown by the decreased BMC, BMD and VBMD. Postoperative complications may occur at a higher frequency when such quality changes occur.Dog proximal femora were examined with DEXA after surgical creation and repair of proximal femoral physeal fractures. DEXA findings support clinical findings of femoral neck thining after fracture repair.

Dual-energy digital radiography for the assessment of bone mineral density

2010 ◽  
Vol 51 (5) ◽  
pp. 543-548 ◽  
Author(s):  
Päivi S. Tahvanainen ◽  
Eveliina Lammentausta ◽  
Pasi Pulkkinen ◽  
Osmo Tervonen ◽  
Timo Jämsä ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Digital Radiography ◽  
Dual Energy ◽  
Mineral Density ◽  
X Ray ◽  
Digital Radiographs ◽  
Geometrical Information ◽  
Linear Correlations

Background: Bone mineral density (BMD) is usually determined by dual-energy X-ray absorptiometry (DXA). Digital radiography (DR) has enabled the application of dual-energy techniques for separating bone and soft tissue, but it is not clear yet whether BMD information can reliably be obtained using DR. Purpose: To determine the ability of dual-energy digital radiography (DEDR) to predict BMD as determined by DXA. Material and Methods: Reindeer femora ( n=15) were imaged in a water bath at a typical clinical imaging voltage of 79 kVp and additionally at 100 kVp on a DR system. BMD was determined in four segmented regions (femoral neck, trochanter, inter-trochanter, Ward's triangle) from these images using the DXA calculation principle. BMD results as determined by DEDR were compared with BMD values as determined by DXA. Results: Significant moderate to high linear correlations (0.66–0.76) were observed at the femoral neck, Ward's triangle, and trochanter between BMD values as determined by the two techniques. The coefficient of variation (CVRMS) ranged between 2.2 and 4.7% and 0.2 and 1.8% for DEDR and DXA analyses, respectively. Conclusion: DXA-based BMD information can be obtained with moderate precision and accuracy using DEDR. In future, combining BMD measurements using DEDR with structural and geometrical information available on digital radiographs could enable a more comprehensive assessment of bone.

scholarly journals AB0609 RADIOFREQUENCY ECHOGRAPHIC MULTI-SPECTROMETRY FOR THE ASSESSMENT OF BOTH FEMORA IN PREGNANT WOMEN

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 1340.1-1340
Author(s):  
E. Kirilova ◽  
N. Kirilov ◽  
S. Vladeva
Keyword(s):  
Bone Mineral Density ◽  
Femoral Neck ◽  
Pregnant Women ◽  
Bone Mineral ◽  
Dual Energy ◽  
Z Score ◽  
Mineral Density ◽  
X Ray ◽  
The Mean ◽  
The Right

Background:Radiofrequency Echographic Multi-Spectrometry (REMS) is a non-ionizing innovative approach for the assessment of REMS-based bone mineral density (BMD) of the axial skeleton. The principle of the REMS technology is based on the analysis of native raw unfiltered ultrasound signals during an echographic scan of the lumbar spine or the femoral neck [1]. Several studies demonstrated the high concordance with dual energy X-ray absorptiometry (DXA) in terms of measured BMD with this novel technology [2,3]. In previous published literature it was envisaged to apply this technology for the examination of the axial bone density in pregnant women. Pregnancy-associated bone loss has been demonstrated as decreased bone mineral density (BMD) in previous studies [4].Objectives:The aim of the current study is to compare the BMD values of both femora between pregnant and non-pregnant women matched for age and BMI using the novel REMS technology.Methods:Of total fifty women twenty pregnant women (40%) and thirty non-pregnant women (60%) were included in the study. The mean age of the pregnant women was 32 years ± 5 standard deviations (SD), (range 25-41 years) and the mean age of the non-pregnant women was 30 years ± 6 standard deviations (SD), (range 24-39 years). REMS approach was used to assess REMS-based BMD and REMS-based Z-score values of the femoral neck. Furthermore, body mass index (BMI) and gestational age in weeks were evaluated.Results:The mean BMI of the pregnant women was 26 kg/m2 ± 7 kg/m2 (range 14 kg/m2-42 kg/m2) and those of the non-pregnant women was 25 kg/m2 ± 5 kg/m2 (range 16 kg/m2-35 kg/m2). The mean gestational age was 20 weeks’ gestation ± 5 weeks’ gestation (range 13-27 weeks’ gestation). REMS-based mean BMD of the left femoral neck of the pregnant women was 0.793 g/cm2 ± 0.167 g/cm2 (range 0.563 g/cm2-1.154 g/cm2). REMS-based mean BMD of the right femoral neck of the pregnant women was 0.828 g/cm2 ± 0.153 g/cm2 (range 0.570 g/cm2-1.161 g/cm2). After comparing left femoral neck BMD with the right femoral neck BMD of the pregnant women, we found a linear correlation (R=0.764). Left femoral neck BMD value (0.793 g/cm2) of the pregnant women was significantly lower than those of the non-pregnant women (0.854 g/cm2), p=0.002. The mean left femoral Z-score of the pregnant women (-0.1 SD with range -2.5 SD-2.9 SD) was also significantly lower compared to those of the non-pregnant women (1.2 SD with range -1.5 SD-3.1 SD), p=0.003.Conclusion:This is the first study which provides data about BMD and Z-score values of both femora in pregnant women assessed with the radiation-free REMS technology. Pregnant women demonstrated significantly lower femoral neck BMD values and Z-scores compared to those of the non-pregnant women. Innovative REMS method could be very helpful for making decision about the treatment of pregnant women who are at risk of lower BMD due to concomitant diseases and/or treatment associated with osteoporosis.References:[1]Casciaro S, Conversano F, Pisani P, Muratore M. New perspectives in echographic diagnosis of osteoporosis on hip and spine. Clin Cases Miner Bone Metab. 2015; 12(2):142-150.[2]Nikolov M, Nikolov N. AB0908 Assessment of the impact of the lean mass with body composition by dual-energy x-ray absorptiometry on the bone mineral density. Annals of the Rheumatic Diseases 2020; 79:1756.[3]Chakova M., Chernev D., Kashukeeva P., Krustev P., Abedinov F. Lumbar Sympathectomy - Literature Review. International Journal of Science and Research (IJSR) Volume 7 Issue 8, August 2018 ISSN (Online): 2319-7064.[4]Degennaro, V. A.; Cagninelli, G.; Lombardi, F. A. “VP34.12: First assessment of maternal status during pregnancy by means of radiofrequency echographic multi-spectrometry technology”. Ultrasound in Obstetrics & Gynecology. 2020, 56 (S1): 199.Disclosure of Interests:None declared.

Increased Bone Accrual in Premenarcheal Gymnasts: A Longitudinal Study

2005 ◽  
Vol 17 (2) ◽  
pp. 149-160 ◽  
Author(s):  
Nicole Gero ◽  
Jacque Cole ◽  
Jill Kanaley ◽  
Marjolein van der Meulen ◽  
Tamara Scerpella
Keyword(s):  
Bone Mineral Density ◽  
Longitudinal Study ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Dual Energy ◽  
Mineral Density ◽  
X Ray ◽  
Total Hip ◽  
Positive Effect

This longitudinal study evaluates the role of impact activity in bone accrual in premenarcheal girls. Twenty-eight gymnasts and 20 controls underwent 1-year analysis; fifteen gymnasts and 8 controls underwent 2-year analysis. Bone mineral density (BMD) was measured yearly by dual energy X-ray absorptiometry. For the 1-year analysis, BMD accrual rates were greater in gymnasts than controls at the forearm only (p < .05). For the 2-year analysis, gains in BMD were 1.5 to 1.9 times greater at the forearm, total hip, and femoral neck for gymnasts (p < .05). These findings confirm the positive effect of impact activity on bone accrual in premenarcheal girls.

A longitudinal study for femoral neck bone mineral density increases in premenopausal caddies using dual-energy X-ray absorptiometry

2001 ◽  
Vol 19 (2) ◽  
pp. 125-130 ◽  
Author(s):  
Sumio Goto ◽  
Masahiro Ishima ◽  
Masahiko Shimizu ◽  
Yoshio Kobayashi ◽  
Hideshige Moriya
Keyword(s):  
Bone Mineral Density ◽  
Longitudinal Study ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Dual Energy ◽  
Mineral Density ◽  
X Ray

Comparative assessment of bone mineral density of the femoral neck between dual-energy X-ray absorptiometry and a new ultrasonic method

2013 ◽  
Author(s):  
Francesco Conversano ◽  
Ernesto Casciaro ◽  
Antonio Greco ◽  
Paola Pisani ◽  
Roberto Franchini ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Ultrasonic Method ◽  
Dual Energy ◽  
Comparative Assessment ◽  
Mineral Density ◽  
X Ray

scholarly journals POS0045 LEAST SIGNIFICANT CHANGE IN BONE DENSITOMETRY IN PATIENTS WITH OBESITY

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 227.2-228
Author(s):  
D. Claire ◽  
M. Geoffroy ◽  
L. Kanagaratnam ◽  
C. Isabelle ◽  
A. Hittinger ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Lumbar Spine ◽  
General Population ◽  
Bone Mineral ◽  
Bone Densitometry ◽  
Dual Energy ◽  
Mineral Density ◽  
Least Significant Change ◽  
X Ray ◽  
Significant Change

Background:Dual energy X-ray absoprtiometry is the reference method to mesure bone mineral density (1). Loss of bone mineral density is significant if it exceeds the least significant change. The threshold value used in general population is 0,03 g/cm2 (2). Patients with obesity are known for having a higher bone mineral density due to metabolism and physiopathology characteristics (3,4).Objectives:The aim of our study was to determine the least significant change in bone densitometry in patients with obesity.Methods:We conducted an interventionnal study in 120 patients with obesity who performed a bone densitometry. We measured twice the bone mineral density at the lumbar spine, the femoral neck and the total hip in the same time (5,6). We determined the least significant change in bone densitometry from each pair of measurements, using the Bland and Altman method. We also determined the least significant change in bone densitometry according to each stage of obesity.Results:The least significant change in bone densitometry in patients with obesity is 0,046g/cm2 at the lumbar spine, 0.069 g/cm2 at the femoral neck and 0.06 g/cm2 at the total hip.Conclusion:The least significant change in bone densitometry in patients with obesity is higher than in general population. These results may improve DXA interpretation in this specific population, and may personnalize their medical care.References:[1]Lees B, Stevenson JC. An evaluation of dual-energy X-ray absorptiometry and comparison with dual-photon absorptiometry. Osteoporos Int. mai 1992;2(3):146-52.[2]Briot K, Roux C, Thomas T, Blain H, Buchon D, Chapurlat R, et al. Actualisation 2018 des recommandations françaises du traitement de l’ostéoporose post-ménopausique. Rev Rhum. oct 2018;85(5):428-40.[3]Shapses SA, Pop LC, Wang Y. Obesity is a concern for bone health with aging. Nutr Res N Y N. mars 2017;39:1-13.[4]Savvidis C, Tournis S, Dede AD. Obesity and bone metabolism. Hormones. juin 2018;17(2):205-17.[5]Roux C, Garnero P, Thomas T, Sabatier J-P, Orcel P, Audran M, et al. Recommendations for monitoring antiresorptive therapies in postmenopausal osteoporosis. Jt Bone Spine Rev Rhum. janv 2005;72(1):26-31.[6]Ravaud P, Reny JL, Giraudeau B, Porcher R, Dougados M, Roux C. Individual smallest detectable difference in bone mineral density measurements. J Bone Miner Res. août 1999;14(8):1449-56.Disclosure of Interests:None declared.

Sign in / Sign up

Export Citation Format

Share Document