Results 11 to 20 of about 1,046,684 (289)
Development and Testing of X-Ray Imaging-Enhanced Poly-L-Lactide Bone Screws. [PDF]
PLoS ONE, 2015 Nanosized iron oxide particles exhibit osteogenic and radiopaque properties. Thus, iron oxide (Fe3O4) nanoparticles were incorporated into a biodegradable polymer (poly-L-lactic acid, PLLA) to fabricate a composite bone screw.
Wei-Jen Chang +6 more
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Are continuous locking headless bone screws with locking plate fixation effective for bridging fracture gaps in far cortical locking constructs? An in vitro biomechanical and finite element study under simplified axial loading [PDF]
Frontiers in Bioengineering and BiotechnologyIntroductionLocking screws typically provide more stable fixation than conventional cortical screws. However, the rigid connection between the locking screw head and plate hole can cause stress concentrations and lead to early failure under cyclic ...
Chen-Chiang Lin, Ya-Han Chan, Po-Feng Su
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Immediate stabilization of pedicle screws [PDF]
Current Directions in Biomedical Engineering, 2023 This study was designed as proof of principle and safety test of the novel technique, the Immediate Stabilization System (ISS). The technique is designed to immediately stabilize polymer-augmented pedicle screws (PAS) in deficient bone and avoid ...
Wild Michael de +6 more
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Fatigue failure of cortical bone screws [PDF]
Journal of Biomechanics, 1983 An experimental study of the fatigue life of cortical bone screws under conditions which stimulated in vivo usage was performed. The two most important factors influencing fatigue life were axial screw tension (the force normal of the plate to bone) and the cyclic shearing load.
Zand, Martin S. +2 more
openaire +5 more sources
Comparison of the bone response to xenogenic bone screws and metallic screws in canine femur [PDF]
Veterinární Medicína, 2014 The study compared the bone response to xenogenic screws and metallic screws of a similar design in a canine femur. The xenogenic bone screws and metallic bone screws were inserted into the femur diaphyses of dogs. Radiological and histological responses
S.Y. Heo, N.S. Kim
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Discover Applied SciencesBone affinity for materials is important for success of bone implants, including pedicle screws. Therefore, regarding medical devices using new materials, evaluating the biocompatibility and bone affinity for our recently developed posterior internal ...
Hiroki Ohashi +10 more
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Dynamic Torque Limitation vs Static Torque Limitation for Bone Screws in Pig Bone
Current Directions in Biomedical EngineeringCorrectly torquing bone screws is important to achieve good patient outcomes. An automated system has been previously proposed that may allow more objective torquing of bone screws. Here the system is tested vs. a static torque limit in pig bone.
Wilkie Jack +6 more
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Applied Sciences, 2019 Although dual-threaded pedicle screws have been developed, the advantages over single-threaded screws remain controversial. We aimed to investigate the biomechanical performance of two types of dual-threaded pedicle screw by comparing their pullout ...
Feng Shen +3 more
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Can barb thread design improve the pullout strength of bone screws? [PDF]
Bone Joint Res, 2021 Aims: To draw a comparison of the pullout strengths of buttress thread, barb thread, and reverse buttress thread bone screws. Methods: Buttress thread, barb thread, and reverse buttress thread bone screws were inserted into synthetic cancellous bone
Feng X +5 more
europepmc +2 more sources
The influence of “kickstand” screws on the mechanical performance of a lateral distal femoral plate: a finite element analysis [PDF]
Bone & Joint ResearchAims: Lateral locked plating of distal femoral fractures is widely reported, yet there remains a 9% to 19% incidence of mechanical failure. Obliquely directed “kickstand screws”, from the metaphyseal portion of a plate toward far-sided articular ...
Alex Trompeter +5 more
doaj +2 more sources