Validation and Optimization of Proximal Femurs Microstructure Analysis Using High Field and Ultra-High Field MRI

Trabecular bone could be assessed non-invasively using MRI. However, MRI does not yet provide resolutions lower than trabecular thickness and a comparative analysis between different MRI sequences at different field strengths and X-ray microtomography (μCT) is still missing. In this study, we compared bone microstructure parameters and bone mineral density (BMD) computed using various MRI approaches, i.e., turbo spin echo (TSE) and gradient recalled echo (GRE) images used at different magnetic fields, i.e., 7T and 3T. The corresponding parameters computed from μCT images and BMD derived from dual-energy X-ray absorptiometry (DXA) were used as the ground truth. The correlation between morphological parameters, BMD and fracture load assessed by mechanical compression tests was evaluated. Histomorphometric parameters showed a good agreement between 7T TSE and μCT, with 8% error for trabecular thickness with no significative statistical difference and a good intraclass correlation coefficient (ICC > 0.5) for all the extrapolated parameters. No correlation was found between DXA-BMD and all morphological parameters, except for trabecular interconnectivity (R2 > 0.69). Good correlation (p-value < 0.05) was found between failure load and trabecular interconnectivity (R2 > 0.79). These results suggest that MRI could be of interest for bone microstructure assessment. Moreover, the combination of morphological parameters and BMD could provide a more comprehensive view of bone quality.

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Relationship Between Structural Parameters, Bone Mineral Density and Fracture Load in Lumbar Vertebrae, Based on High-Resolution Computed Tomography, Quantitative Computed Tomography and Compression Tests

Osteoporosis International ◽

10.1007/s001980050168 ◽

1999 ◽

Vol 9 (5) ◽

pp. 433-440 ◽

Cited By ~ 46

Author(s):

M. A. Haidekker ◽

R. Andresen ◽

H. J. Werner

Keyword(s):

Computed Tomography ◽

Bone Mineral Density ◽

High Resolution ◽

Structural Parameters ◽

Quantitative Computed Tomography ◽

Lumbar Vertebrae ◽

Fracture Load ◽

Compression Tests ◽

Mineral Density ◽

High Resolution Computed Tomography

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The Effect of Mud-Bath Therapy on Bone Status in Rats During Adjuvant Subchronic Arthritis

Acta Medica (Hradec Kralove Czech Republic) ◽

10.14712/18059694.2015.51 ◽

2012 ◽

Vol 55 (3) ◽

pp. 133-137 ◽

Cited By ~ 2

Author(s):

Helena Živná ◽

Ljiljana Maric ◽

Iveta Gradošová ◽

Klára Švejkovská ◽

Soňa Hubená ◽

...

Keyword(s):

Bone Markers ◽

Fracture Load ◽

Good Effect ◽

Mineral Density ◽

Left Femur ◽

X Ray ◽

Bone Status ◽

Male Wistar Rats ◽

Hot Bath ◽

Bath Therapy

Introduction: We studied influence of mud-bath on bone status in male Wistar rats with subchronic arthritis. Methods: Arthritis was induced by 2 subplantar injections of Freund’s adjuvans with heat-killed Streptoccocus pyogenes into paw. Groups: intact (int) on chippings; (con) arthritis on chippings; (san38) arthritis on hot sand; (mu38) arthritis on hot mud; (mu21) arthritis on mild mud. Bone mineral density (BMD, g/cm2) was measured by dual energy X-ray absorptiometry and femurs were tested biomechanically. Bone markers osteocalcin (OC), PINP and CTX were analysed in bone. Results: BMD of right femur decreased vs. left in san38 (p = 0.030) and mu38 (p = 0.047). Fracture load of right/left femur (N) decreased in experimental groups, significantly in san38 (p = 0.05). Fracture threshold of neck decreased in right vs. left in experimental groups, but significantly in san38 (p = 0.05). OC decreased in mu38 vs. con (1.84 ± 0.14/2.62 ± 0.23). PINP decreased in int vs. san38 (p = 0.005) and mu21 (p < 0.001). CTX decreased in int vs. mu38 (p = 0.006) and mu21 (p = 0.005). Conclusion: The hot bath appears indifferent in relation to osteoporosis, while cold mud-bath shows good effect on bone metabolism. The cold mud-baths help to reduce arthritic inflammation and pain and thereby lead to higher mobility with positive consequence on bone.

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Micro-computed tomography and mechanical evaluation of trabecular bone structure in osteopenic and osteoporotic fractures

Journal of Orthopaedic Surgery ◽

10.1177/2309499017692718 ◽

2017 ◽

Vol 25 (1) ◽

pp. 230949901769271 ◽

Cited By ~ 3

Author(s):

Fırat Ozan ◽

Mahmut Pekedis ◽

Şemmi Koyuncu ◽

Taşkın Altay ◽

Hasan Yıldız ◽

...

Keyword(s):

Computed Tomography ◽

Bone Structure ◽

Structural Parameters ◽

Osteoporotic Fractures ◽

Biomechanical Properties ◽

Compression Tests ◽

Micro Computed Tomography ◽

Mineral Density ◽

Trabecular Thickness ◽

Significant Difference

Purpose: Osteopenia and osteoporosis are the two most common musculoskeletal disorders in the elderly population. We determined whether osteopenic and osteoporotic patients with fractures exhibit differences in trabecular morphology and biomechanical properties of bone. Methods: Fourteen osteopenic patients and 28 osteoporotic patients with hip fractures who underwent hemiarthroplasty for proximal femoral fractures caused by low-energy injury were included. Bone mineral density (BMD) measurements were performed. Compression tests and high-resolution micro-computed tomography were used to assess cancellous bone samples obtained from the principal compressive region of the femoral head. Results: The BMD values were lower in the osteoporotic patients than in the osteopenic patients ( p < 0.05). There was a significant difference in the yield stress values between the groups ( p < 0.05). However, no significant differences in the strain energy density, stiffness and Young’s modulus were observed between the groups ( p > 0.05). The mean maximum stress was significantly higher in the osteoporotic patients than in the osteopenic patients ( p < 0.05). Although structural parameters, including bone volume (BV), BV fraction, trabecular thickness, trabecular connectivity density and trabecular number, were higher in the osteopenic patients, the differences were not significant ( p > 0.05). Trabecular separation values were significantly higher in the osteoporotic patients ( p < 0.05). Conclusion: Our results showed that the trabecular morphology and biomechanical properties of bone were not significantly different between osteopenic and osteoporotic patients in terms of some parameters.

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Electron Microscopy of Shock Loaded Polycrystalline Beryllium

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100052547 ◽

1974 ◽

Vol 32 ◽

pp. 506-507 ◽

Cited By ~ 1

Author(s):

J. M. Galbraith ◽

L. E. Murr ◽

A. L. Stevens

Keyword(s):

Electron Microscopy ◽

Wave Propagation ◽

Structural Change ◽

Single Crystal ◽

Diffraction Pattern ◽

Shock Loading ◽

Slip Systems ◽

Compression Tests ◽

X Ray Diffraction ◽

X Ray

Uniaxial compression tests and hydrostatic tests at pressures up to 27 kbars have been performed to determine operating slip systems in single crystal and polycrystal1ine beryllium. A recent study has been made of wave propagation in single crystal beryllium by shock loading to selectively activate various slip systems, and this has been followed by a study of wave propagation and spallation in textured, polycrystal1ine beryllium. An alteration in the X-ray diffraction pattern has been noted after shock loading, but this alteration has not yet been correlated with any structural change occurring during shock loading of polycrystal1ine beryllium.This study is being conducted in an effort to characterize the effects of shock loading on textured, polycrystal1ine beryllium. Samples were fabricated from a billet of Kawecki-Berylco hot pressed HP-10 beryllium.

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Bone health index by hand X-ray compared with bone mineral density by dual-energy X-ray absorptiometry in children with Duchenne muscular dystrophy

Bone Abstracts ◽

10.1530/boneabs.7.p91 ◽

2019 ◽

Author(s):

Jonathan J Bowden ◽

Ramkumar Krishnamurthy ◽

Houchun Hu ◽

Brent Adler ◽

Rajesh Krishnamurthy ◽

...

Keyword(s):

Bone Mineral Density ◽

Duchenne Muscular Dystrophy ◽

Muscular Dystrophy ◽

Bone Mineral ◽

Bone Health ◽

Dual Energy ◽

Health Index ◽

Mineral Density ◽

X Ray ◽

Bone Health Index

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Membrane estrogen receptor α is essential for estrogen signaling in the male skeleton

Journal of Endocrinology ◽

10.1530/joe-18-0406 ◽

2018 ◽

Vol 239 (3) ◽

pp. 303-312 ◽

Cited By ~ 2

Author(s):

H H Farman ◽

K L Gustafsson ◽

P Henning ◽

L Grahnemo ◽

V Lionikaite ◽

...

Keyword(s):

Estrogen Receptor ◽

Estrogen Receptor Α ◽

Estrogen Signaling ◽

Areal Bone Mineral Density ◽

Male Mice ◽

Mineral Density ◽

Intact Male ◽

Trabecular Thickness ◽

Total Body

The importance of estrogen receptor α (ERα) for the regulation of bone mass in males is well established. ERα mediates estrogenic effects both via nuclear and membrane-initiated ERα (mERα) signaling. The role of mERα signaling for the effects of estrogen on bone in male mice is unknown. To investigate the role of mERα signaling, we have used mice (Nuclear-Only-ER; NOER) with a point mutation (C451A), which results in inhibited trafficking of ERα to the plasma membrane. Gonadal-intact male NOER mice had a significantly decreased total body areal bone mineral density (aBMD) compared to WT littermates at 3, 6 and 9 months of age as measured by dual-energy X-ray absorptiometry (DEXA). High-resolution microcomputed tomography (µCT) analysis of tibia in 3-month-old males demonstrated a decrease in cortical and trabecular thickness in NOER mice compared to WT littermates. As expected, estradiol (E2) treatment of orchidectomized (ORX) WT mice increased total body aBMD, trabecular BV/TV and cortical thickness in tibia compared to placebo treatment. E2 treatment increased these skeletal parameters also in ORX NOER mice. However, the estrogenic responses were significantly decreased in ORX NOER mice compared with ORX WT mice. In conclusion, mERα is essential for normal estrogen signaling in both trabecular and cortical bone in male mice. Increased knowledge of estrogen signaling mechanisms in the regulation of the male skeleton may aid in the development of new treatment options for male osteoporosis.

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Blood Parathyrin and Mineral Metabolism Dynamics. A clinical analyze

Revista de Chimie ◽

10.37358/rc.18.10.6619 ◽

2018 ◽

Vol 69 (10) ◽

pp. 2754-2758

Author(s):

Lucretiu Radu ◽

Mara Carsote ◽

Ancuta Augustina Gheorghisan Galateanu ◽

Smaranda Adelina Preda ◽

Veronica Calborean ◽

...

Keyword(s):

Case Control Study ◽

Mineral Metabolism ◽

Lumbar Bone Mineral Density ◽

Urinary Calcium ◽

Mineral Density ◽

Cross Sectional ◽

X Ray ◽

Menopausal Women ◽

Ionic Calcium ◽

Control Study

Circulating parathyrin (PTH or parthormon) is increased in primary hyperparathyroidism (PHP) in association with high total/ionic calcium (T/I Ca) and others mineral metabolism anomalies. This is a clinical cross-sectional and case-control study analyzing these changes after PHP surgical correction in menopausal women. Baseline parameters were: mean age at diagnosis (59.63�9.6 years), TCa of 10.9�0.7 mg/dL, PTH of 138.02�59.36 pg/mL. Longitudinal data showed: final TCa p[0.00001, ICa p[0.00001, phosphorus p[0.0001, magnesium p=0.9, 24-h urinary calcium p=0.4, 25-hydroxycholecalciferol p=0.01, PTH p[0.00001. High circulating parathyrin values due to PHP normalized after surgery in addition to statistical significant changes of TCa, ICa, P, lumbar Bone Mineral Density provided by Dual-Energy X-Ray Absorptiometry; Mg and 24-h Ca might not be a marker of general mineral metabolism improvement.

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Anxiety Levels Predict Bone Mineral Density in Postmenopausal Women Undergoing Oral Bisphosphonates: A Two-Year Follow-Up

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18158144 ◽

2021 ◽

Vol 18 (15) ◽

pp. 8144

Author(s):

Gabriella Martino ◽

Federica Bellone ◽

Carmelo M. Vicario ◽

Agostino Gaudio ◽

Andrea Caputo ◽

...

Keyword(s):

Bone Mineral Density ◽

Bone Mineral ◽

Rating Scale ◽

Osteoporotic Fractures ◽

Oral Bisphosphonates ◽

Mineral Density ◽

X Ray ◽

Hamilton Anxiety Rating Scale ◽

Anxiety Levels

Clinical psychological factors may predict medical diseases. Anxiety level has been associated with osteoporosis, but its role on bone mineral density (BMD) change is still unknown. This study aimed to investigate the association between anxiety levels and both adherence and treatment response to oral bisphosphonates (BPs) in postmenopausal osteoporosis. BMD and anxiety levels were evaluated trough dual-energy X-ray absorptiometry and the Hamilton Anxiety Rating Scale (HAM-A), respectively. Participants received weekly medication with alendronate or risedronate and were grouped according to the HAM-A scores into tertiles (HAM-A 3 > HAM-A 2 > HAM-A 1). After 24 months, BMD changes were different among the HAM-A tertiles. The median lumbar BMD change was significantly greater in both the HAM-A 2 and HAM-A 3 in comparison with the HAM-A 1. The same trend was observed for femoral BMD change. Adherence to BPs was >75% in 68% of patients in the HAM-A 1, 79% of patients in the HAM-A 2, and 89% of patients in the HAM-A 3 (p = 0.0014). After correcting for age, body mass index, depressive symptoms, and the 10-yr. probability of osteoporotic fractures, anxiety levels independently predicted lumbar BMD change (β = 0.3417, SE 0.145, p = 0.02). In conclusion, women with higher anxiety levels reported greater BMD improvement, highlighting that anxiety was associated with adherence and response to osteoporosis medical treatment, although further research on this topic is needed.

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Programming Effect of the Parental Obesity on the Skeletal System of Offspring at Weaning Day

Animals ◽

10.3390/ani11020424 ◽

2021 ◽

Vol 11 (2) ◽

pp. 424

Author(s):

Radoslaw Piotr Radzki ◽

Marek Bienko ◽

Dariusz Wolski ◽

Monika Ostapiuk ◽

Pawel Polak ◽

...

Keyword(s):

Computed Tomography ◽

Bone Mineral ◽

High Energy ◽

Diet Group ◽

Male Rats ◽

Bending Test ◽

Male Rat ◽

Skeletal System ◽

Mineral Density ◽

Trabecular Thickness

Our study aimed to verify the hypothesis of the existence of a programming effect of parental obesity on the growth, development and mineralization of the skeletal system in female and male rat offspring on the day of weaning. The study began with the induction of obesity in female and male rats of the parental generation, using a high-energy diet (group F). Females and males of the control group received the standard diet (group S). After 90 days of dietary-induced obesity, the diet in group F was changed into the standard. Rats from groups F and S were mated to obtain offspring which stayed with their mothers until 21 days of age. Tibia was tested using dual-energy X-ray absorptiometry (DXA), peripheral quantitative computed tomography (pQCT), micro-computed tomography (µCT) and mechanical strength using the three-point bending test. Biochemical analysis of blood serum bone metabolism markers was performed. DXA analysis showed higher tibia bone mineral content (BMC) and area. pQCT measurements of cortical and trabecular tissue documented the increase of the volumetric bone mineral density and BMC of both bone compartments in offspring from the F group, while µCT of the trabecular tissue showed an increase in trabecular thickness and a decrease of its separation. Parental obesity, hence, exerts a programming influence on the development of the skeletal system of the offspring on the day of the weaning, which was reflected in the intensification of mineralization and increased bone strength.

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