Results 231 to 240 of about 1,892,246 (283)
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Optimizing Bone Screw Pullout Force
Journal of Orthopaedic Trauma, 1990Stability of internal fixation by plate and screw depends on the interface of bone and screw threads. Bone-screw thread design was tested in a synthetic bone model to determine maximum bone-screw pullout force. The model was confirmed to provide reproducible results in a clinically relevant range.
James S. Ferries +4 more
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Fracture Fixation with Screws and Bone Plates
Veterinary Clinics of North America: Small Animal Practice, 1999The treatment goal of fracture fixation is to restore the patient to normal function as quickly as possible. Fracture fixation can be accomplished by various means; fixation with screws and bone plates is not only a popular but a successful technique. In this article, the authors provide concepts that a surgeon must understand for successful screw and ...
Scot W. Swainson, Michael G. Conzemius
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Slippage Between Screwdriver and Bone Screw
Clinical Orthopaedics and Related Research, 2002Cortical 3.5-mm stainless steel screws with hexagonal heads and corresponding screwdrivers from two manufacturers were investigated. Measurement of dimensions and torsional testing were done to study slippage between the screw and the driver bit. There were only small differences in dimensions between the manufacturers.
Jon Behring +2 more
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Survivability of TiO2 nanotubes on the surface of bone screws
, 2014Modifying surface chemistry and/or surface topography is considered to be a traditional way of optimizing bone-implant integration (osseointegration) for improved bone bonding.
C. Friedrich +4 more
semanticscholar +1 more source
Remodeling along the Bone-screw Interface
Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie, 2008The stability of cortical miniscrews depends on the contact between bone and implant. The aim of this study was to compare bone remodeling along the contact surface between the screw and bone with and without pre-drilling.Twenty-four FAMI miniscrews (length 10 mm, diameter 2 mm) were inserted into the mandibular alveolar process apical to the premolars
Paul-Georg Jost-Brinkmann +4 more
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Biomechanical properties of small bone screws
Journal of Oral and Maxillofacial Surgery, 1994To evaluate systematically the biomechanical properties of 13 popular screw designs, ranging from 0.8 to 2.0 mm in diameter.Screws were characterized in terms of external, core, and drill diameter; cutting flute and head design; material; pitch, thread depth; and height of shank (unthreaded portion) and shank with plate.
Emet D. Schneiderman +3 more
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Pedicle Screws and Bone Mineral Density
Spine, 1994Thirty-five consecutive patients who underwent surgeries for decompression, and one-level fusions with Cotrel-Dubousset pedicle screws for spinal canal stenosis were included in this study. The relationship between bone mineral density of the lumbar spine and the rate of successful fusion and screw problems was studied.Bone mineral density of the third
Yutaka Ogawa +3 more
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2017
Placement of lumbar fixation screws using the cortical bone trajectory is a novel and potentially valuable technique. In this chapter, we discuss the current literature on clinical outcomes and biomechanical properties of the cortical bone trajectory. We examine indications for which this trajectory may be beneficial compared to a traditional pedicle ...
Mark B. Frenkel +2 more
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Placement of lumbar fixation screws using the cortical bone trajectory is a novel and potentially valuable technique. In this chapter, we discuss the current literature on clinical outcomes and biomechanical properties of the cortical bone trajectory. We examine indications for which this trajectory may be beneficial compared to a traditional pedicle ...
Mark B. Frenkel +2 more
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T-Screw. A new bone fixation device
Journal of the American Podiatric Medical Association, 1989The T-Screw was patented in 1984. A 5-year study was begun in 1980, and FDA approval was granted in 1985. Detailed results of this clinical study will be reported in a later paper. The purpose of this paper is to introduce the device. The authors have found that early return to normal function and wearing shoes has been possible when using T-Screws for
T K Lichty +3 more
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An alternative to screws for plating osteoporotic bone
Journal of Biomedical Engineering, 1993There are several problems with existing techniques used to plate broken bones. One of the most serious is that of screws pulling out during insertion or healing in patients suffering from osteoporosis. This paper investigates the mechanism of this pulling out, and proposes an alternative device to attach plates to weak bones.
T.StJ. King, David Cebon
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