Results 261 to 270 of about 318,229 (308)

Cortical Bone Trajectory-Based Dynamic Stabilization

World Neurosurgery, 2022
Cortical 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, Chao-Hung Kuo, Hsuan-Kan Chang, Chin-Chu Ko, Tsung-Hsi Tu, Chih-Chang Chang, Henrich Cheng, Jiing-Feng Lirng, Wen-Cheng Huang, Jau-Ching Wu   +9 more
openaire   +2 more sources

Spiral fracture of cortical bone

Journal of Biomechanics, 1982
Abstract 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, 1982
Cortical 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
openaire   +1 more source

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, Agnes Ostertag, Caroline Marty, Pablo Ureña Torres, Martine Cohen-Solal   +4 more
openaire   +2 more sources

Cortical bone drilling and thermal osteonecrosis [PDF]

Clinical Biomechanics, 2012
Bone drilling is a common step in operative fracture treatment and reconstructive surgery. During drilling elevated bone temperature is generated. Temperatures above 47°C cause thermal osteonecrosis which contributes to screw loosening and subsequently implant failures and refractures.The current literature on bone drilling and thermal osteonecrosis is
Augustin, Goran, Zigman, Tomislav, Davila, Slavko, Udiljak, Toma, Staroveški, Tomislav, Brezak, Danko, Babić, Slaven   +6 more
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Spectrophotometric analysis of cortical bone

IEEE Engineering in Medicine and Biology Magazine, 1991
An attempt was made to study the structural behavior of a crystal in bone composite material of rats and rabbits. A Fourier transform infrared (FTIR) spectrophotometer and computer were used to monitor the infrared spectra of five bone samples each from the rats and rabbits.
D V, Rai, H S, Ranu
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Study of human cortical bone and demineralized human cortical bone viscoelasticity

Journal of Applied Polymer Science, 2001
The knowledge of human bone viscoelasticity is an important issue for defining semirigid calcified tissues implants. A very sensitive technique was used to investigate bone viscoelasticity: the thermally stimulated creep method. A study of demineralized human bone was performed to determine the molecular origin of bone viscoelasticity.
M. Fois, A. Lamure, M. J. Fauran, C. Lacabanne   +3 more
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Composition of trabecular and cortical bone

The Anatomical Record, 1964
AbstractA technique was devised for obtaining marrow‐free trabecular bone so that the trabecular and cortical bone composition of dog, steer, monkey and man could be studied. Vertebral body was cut in the frontal plane into slices 2 mm thick with an electric band saw.
J K, GONG, J S, ARNOLD, S H, COHN
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Ultrasonic propagation in cortical bone mimics

Physics in Medicine and Biology, 2006
Understanding the velocity and attenuation characteristics of ultrasonic waves in cortical bone and bone mimics is important for studies of osteoporosis and fractures. Three complementary approaches have been used to help understand the ultrasound propagation in cortical bone and bone mimics immersed in water, which is used to simulate the surrounding ...
Dodd, S.P., Cunningham, J.L., Miles, A.W., Gheduzzi, S., Humphrey, V.F.   +4 more
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Intrinsic material properties of cortical bone

Journal of Bone and Mineral Metabolism, 2010
The G171V mutation (high bone mass, HBM) is autosomal dominant and is responsible for high bone mass in humans. Transgenic HBM mice in which the human LRP5 G171V gene is inserted also show a similar phenotype with greater bone mass and biomechanical performance than wild-type mice, as determined by whole bone testing.
Gloria E, Lopez Franco, Robert D, Blank, Mohammed P, Akhter   +2 more
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