Results 291 to 300 of about 2,329,584 (350)
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Radiology, 1988
The data on 26 patients with solitary metastatic lesions arising in cortical bone were studied. Nineteen patients were over 50 years of age. In 19 patients, the cortical metastasis was the first indication of the presence of a primary malignant condition. In seven cases, cortical metastases developed in patients with a known primary tumor.
E G, Coerkamp, H M, Kroon
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The data on 26 patients with solitary metastatic lesions arising in cortical bone were studied. Nineteen patients were over 50 years of age. In 19 patients, the cortical metastasis was the first indication of the presence of a primary malignant condition. In seven cases, cortical metastases developed in patients with a known primary tumor.
E G, Coerkamp, H M, Kroon
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Cortical Bone Resorption in Osteoporosis
Calcified Tissue International, 1997A study was made of 110 women: 35 healthy premenopausal, 40 healthy postmenopausal, and 35 women diagnosed as having postmenopausal osteoporosis. The postmenopausal women had similar ages and years since menopause (YSM). In all of the women, total bone mass was evaluated by dual-energy X-ray absorptiometry and metacarpal morphometry was evaluated by ...
F, Aguado +3 more
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Ultrasound Scattering in Cortical Bone
2022Recent advances in imaging of bone microstructure have led to a growing recognition of the role of cortical microstructure in osteoporosis. It is now accepted that the assessment of the microstructure of cortical porosity is essential to assess bone mechanical competence and predict fracture risk. Cortical porosity affects the propagation of ultrasound
Yasamin, Karbalaeisadegh, Marie, Muller
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Is Cortical Bone Hip? What determines Cortical Bone Properties?
Bone, 2007Increased bone turnover may produce a disturbance in bone structure which may result in fracture. In cortical bone, both reduction in turnover and increase in hip bone mineral density (BMD) may be necessary to decrease hip fracture risk and may require relatively greater proportionate changes than for trabecular bone.
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Micromechanical modelling of cortical bone
Computer Methods in Biomechanics and Biomedical Engineering, 2007Cortical bone is a heterogeneous material with a complex hierarchical microstructure. In this work, unit cell finite element models were developed to investigate the effect of microstructural morphology on the macroscopic properties of cortical bone.
L P, Mullins +3 more
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Science, 1968
Modified electron-microscopic techniques permit the sectioning of fully mineralized compact bone. Cortical canals in human femur are extensively innervated. Most nerves are unmyelinated and range from 0.5 to 10 micrometers in diameter. I have found a few mixed nerves (myelinated and unmyelinated fibers), one of which was 130 micrometers in diameter.
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Modified electron-microscopic techniques permit the sectioning of fully mineralized compact bone. Cortical canals in human femur are extensively innervated. Most nerves are unmyelinated and range from 0.5 to 10 micrometers in diameter. I have found a few mixed nerves (myelinated and unmyelinated fibers), one of which was 130 micrometers in diameter.
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Cortical Bone Trajectory-Based Dynamic Stabilization
World Neurosurgery, 2022Cortical bone trajectory (CBT) screws have demonstrated similar biomechanical strength and fusion rates as conventional pedicle screws for short-segment lumbar fusion. However, very few studies have verified the viability of CBT screws in dynamic stabilization.
Yi-Hsuan Kuo +9 more
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Spiral fracture of cortical bone
Journal of Biomechanics, 1982Abstract The spiral fracture associated with rapid torsional loading of sheep femora bone cylindrical specimens has been characterised by high speed photography. It was established that a time from the initiation to the completion of fracture of 2–3 msec gave a helix angle of 37–38° and a maximum velocity of ∼ 30 m/sec.
W, Bonfield, M D, Grynpas
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Fracture mechanics of cortical bone
Journal of Biomechanics, 1982Cortical bone is notch sensitive and the presence of surface cracks significantly reduces the energy absorbed during fracture for both longitudinal and transverse fracture directions [1]. A variety of fracture mechanics techniques have been utilized to assess the fracture toughness of bone specimens with a “characterized” crack, which have included ...
J. C. Behiri, W. Bonfield
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Cortical Bone Microarchitecture in Dialysis Patients
American Journal of Nephrology, 2020<b><i>Background:</i></b> The incidence of skeletal fractures is high in dialysis patients. Current available tools are insufficient to predict bone fragility. We analyzed the microarchitecture in patients on dialysis therapy using bone biopsies and peripheral microcomputed tomography.
Eva Benillouche +4 more
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