Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Pedicle Screws"”.
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Design and Development of a Novel Expanding Pedicle Screw for Use in the Osteoporotic Lumbar Spine
Pedicle screws are commonly utilized in spinal surgery; however, traditional designs often do not provide adequate fixation in osteoporotic spines. The objective of this thesis was to develop a novel expanding screw for use in osteoporotic lumbar pedicles. Helical screws capable of expanding post …
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In vitro comparison of a new stand-alone anterior lumbar interbody cage device with established fixation techniques
… posterior fixation (i.e., facet bolts and pedicle screws). Descriptive statistics and analysis of variance (ANOVA) was used to determine if the differences between the different treatment groups are significant or not. Statistical analysis was also used to determine the contribution of the …
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Characterization of metal artifacts in diffusion tensor imaging for spinal cord applications
… A cervical spine phantom implanted with pedicle screws was also used to simulate in-vivo imaging. Optimization of the DTI sequence was also considered using different metal artifact reduction techniques including view-angle-tilting, slice thickness, and field of view size. Minor reduction …
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Analysis of Entry Point of Pedicle Screw Placement in the Lumbar Spine
… accepted conventional entry point of the pedicle screw is in the midline of the transverse process from cephalad to caudal, and slightly up onto the lateral aspect of the superior articular process. But the combined posterior lumbar interbody fusion(PLIF) do not need to expose the …
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The Design and analysis of a HA/PLA pedicle screw for spinal fusion
Metallic pedicle screws have been widely used in the orthopaedic field to treat spinal diseases. Although spinal screws have improved over the last few decades, there is still sometimes a need for a second painful surgery to remove the instrumentation due to late-onset pain or discomfort due to …
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Optimization of Pedicle Screw Depth in the Lumbar Spine: Biomechanical Characterization of Screw Stability and Pullout Strength
… of the biomechanical strength of lumbar pedicle screw fixation as it relates to screw sizing and placement. Biomechanical analyses examining ideal pedicle screw depth with current pedicle screw technology are limited. In the osteoporotic spine, optimized pedicle screw insertion depth may …