Bone ablations in peripheral skeleton: rationale, techniques and evidence

Characteristic feature of ultrasonic densitometry have been investigated in women,s population of Chelyabinsk (n=200) from 25 to 65 years old. We used domestically produced Echoosteometr-02. A basis of a body of the lower jaw became a new area for ultrasonic densitometry. We can recommend a lower jaw as a new area for ultrasonic densitometry taking into account high pithiness of data in a combination with simplicity of research. Traditional localizations have been also applied: proximal phalanges of the hand, patella, tibia diaphysis and calcaneus bones of the right and left sides. We have established a "peak" values of a speed of the ultrasound wave for the given bones. Also we have found that a tubular bones and a large spongy bone - a lower jaw - possess the highest speed of an ultrasound wave, and the speed was mach less in a small spongy bones, that is caused by their anatomic structure. Ultrasound densitometry parameters of the peripheral skeleton start to reduce from 40-50 years behind exception patella - from 55 years. The lowest values were in group of women of 60-65 years. The rates of ultrasonic densitometry received by us are possible to use for women population of Chelyabinsk.

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OP0069 The relationship between estimated bone strength by finite element analysis at the peripheral skeleton to areal bmd and tbs at lumbar spine in adults

10.1136/annrheumdis-2018-eular.3978 ◽

2018 ◽

Author(s):

J.C. Alvarenga ◽

S. Boyd ◽

R. Pereira

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Lumbar Spine ◽

Bone Strength ◽

Element Analysis ◽

The Relationship ◽

Peripheral Skeleton

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Effects of diet-induced obesity and voluntary wheel running on the axial and peripheral skeleton microstructure in mice

Bone ◽

10.1016/j.bone.2010.04.173 ◽

2010 ◽

Vol 47 ◽

pp. S86

Author(s):

H. Ma ◽

T. Turpeinen ◽

S. Torvinen ◽

M. Silvennoinen ◽

R. Rinnankoski-Tuikka ◽

...

Keyword(s):

Wheel Running ◽

Voluntary Wheel Running ◽

Diet Induced Obesity ◽

Peripheral Skeleton ◽

Voluntary Wheel

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Bone Metabolism in Adolescents Undergoing Bariatric Surgery

The Journal of Clinical Endocrinology & Metabolism ◽

10.1210/clinem/dgaa836 ◽

2020 ◽

Author(s):

Madhusmita Misra ◽

Miriam A Bredella

Keyword(s):

Bariatric Surgery ◽

Sleeve Gastrectomy ◽

Lumbar Spine ◽

Bone Loss ◽

Bone Microarchitecture ◽

Quantitative Computed Tomography ◽

Areal Bone Mineral Density ◽

Mineral Density ◽

Cross Sectional ◽

Peripheral Skeleton

Abstract Purpose The prevalence of childhood obesity has increased over past decades with a concomitant increase in metabolic and bariatric surgery (MBS). While MBS in adults is associated with bone loss, only a few studies have examined the effect of MBS on the growing skeleton in adolescents. Methods This mini-review summarizes available data on the effects of the most commonly performed MBS (sleeve gastrectomy and gastric bypass) on bone in adolescents. A literature review was performed using PubMed for English-language articles. Results Dual-energy x-ray absorptiometry (DXA) measures of areal bone mineral density (aBMD) and BMD Z scores decreased following all MBS. Volumetric BMD (vBMD) by quantitative computed tomography (QCT) decreased at the lumbar spine while cortical vBMD of the distal radius and tibia increased over a year following sleeve gastrectomy (total vBMD did not change). Reductions in narrow neck and intertrochanteric cross-sectional area and cortical thickness were observed over this duration, and hip strength estimates were deleteriously impacted. Marrow adipose tissue (MAT) of the lumbar spine increased while MAT of the peripheral skeleton decreased a year following sleeve gastrectomy. The amount of weight loss and reductions in lean and fat mass correlated with bone loss at all sites, and with changes in bone microarchitecture at peripheral sites. Conclusion MBS in adolescents is associated with aBMD reductions, and increases in MAT of the axial skeleton, while sleeve gastrectomy is associated with an increase in cortical vBMD and decrease in MAT of the peripheral skeleton. No reductions have been reported in peripheral strength estimates.

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Quantitative computed tomography at the axial and peripheral skeleton

European Radiology ◽

10.1007/pl00006862 ◽

1997 ◽

Vol 7 (S2) ◽

pp. S32-S42 ◽

Cited By ~ 39

Author(s):

G. Guglielmi ◽

P. Schneider ◽

T. F. Lang ◽

G. M. Giannatempo ◽

M. Cammisa ◽

...

Keyword(s):

Computed Tomography ◽

Quantitative Computed Tomography ◽

Peripheral Skeleton

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Beating the Limitation of Energy Gap Law Utilizing Deep Red MR-TADF Emitter with Narrow Energy-Bandwidth

10.26434/chemrxiv.13202975 ◽

2020 ◽

Author(s):

Yuewei Zhang ◽

Dongdong Zhang ◽

Tianyu Huang ◽

Guomeng Li ◽

Chen Zhang ◽

...

Keyword(s):

High Performance ◽

Near Infrared ◽

Energy Gap ◽

Organic Light Emitting Diodes ◽

Vibrational Coupling ◽

Light Emitting ◽

Radiative Processes ◽

Energy Gap Law ◽

Mr Effect ◽

Peripheral Skeleton

The development of high-performance deep red/near-infrared organic light-emitting diodes is hindered by strong non-radiative processes as governed by the energy gap law. Herein, a novel BN-containing skeleton featuring linear N-π-N and B-π-B structure is developed, establishing partial bonding/antibonding character on phenyl core for enhanced electronics coupling of para-positioned B atoms as well as N atoms to narrow energy gaps. Also, the remained MR effect on the peripheral skeleton to maintain the MR effect to minimize the bonding/ antibonding character and suppress vibrational coupling between S0 and S1, thereby fundamentally overcoming the luminescent boundary set by the energy gap law. The target molecules R-BN and R-TBN exhibited extremely high PLQYs of 100% with emission wavelengths at 666 and 686 nm, respectively. The narrow FWMHs of 38 nm observed also testify the effectiveness of vibronic suppression. The corresponding OLEDs afford record-high EQEs over 28% with emission wavelength over 664 nm.

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Fractures, Peripheral Skeleton

Encyclopedia of Diagnostic Imaging ◽

10.1007/978-3-540-35280-8_989 ◽

2008 ◽

pp. 741-746

Author(s):

David Malfair

Keyword(s):

Peripheral Skeleton

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Histomorphometric investigations on cancellous bone of rats to characterize age- and sex-related differences between axial and peripheral skeleton.

Bone ◽

10.1016/8756-3282(96)89409-9 ◽

1996 ◽

Vol 19 (3) ◽

pp. 167S

Author(s):

K WUNSCHE

Keyword(s):

Cancellous Bone ◽

Peripheral Skeleton ◽

Age And Sex

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Proton MR spectroscopy in characterization of focal bone lesions of peripheral skeleton

Egyptian Journal of Radiology and Nuclear Medicine ◽

10.1186/s43055-019-0109-5 ◽

2019 ◽

Vol 50 (1) ◽

Author(s):

Meenu Amar ◽

Rohini Gupta Ghasi ◽

L. G. Krishna ◽

Geetika Khanna

Keyword(s):

Mr Spectroscopy ◽

Bone Lesions ◽

Water Suppression ◽

Low Grade ◽

Benign Lesions ◽

Giant Cell Tumors ◽

Proton Mr Spectroscopy ◽

Malignant Lesions ◽

Peripheral Skeleton ◽

Choline Peak

Abstract Background The aim of our study was to determine the value of single-voxel proton MR spectroscopy (1HMRS) in distinguishing benign from malignant focal bone lesions in the peripheral skeleton. MRI and 1HMRS was performed in 50 focal lesions (> 1 cm size) detected on radiographs of peripheral skeleton.1HMRS was performed at 1.5 T with TE of 144 ms with automatic shimming and water suppression. Qualitative analysis for a discrete choline peak at 3.2 ppm was done. Significance of the presence of choline peak on 1HMRS in distinguishing benign from malignant lesions was calculated using histopathology as a gold standard. Chi-square test was used and p value < 0.05 was considered significant. Results Forty-one benign and 9 malignant lesions were confirmed by histopathological results. Amongst malignant lesions, choline peak was positive in all but 1 case of low-grade lymphoma. MR spectra of 11 benign lesions showed the presence of choline peak. All 7 benign giant cell tumors (GCT) were positive for choline peak. The sensitivity, specificity, PPV, NPV of proton MR spectroscopy in differentiating benign from malignant lesions were 87.5%,71%,38.8%, and 96.4% respectively. p value was significant (< 0.05). Conclusion 1HMRS in focal bone lesions can help in the differentiation of malignant from benign musculoskeletal tumors. Although some benign lesions may show false-positive result, absence of choline peak is a reliable reassurance against malignancy. GCT is an exception amongst benign bone tumors as it consistently shows the presence of choline peak on 1HMRS.

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