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 8 of 8 for “"Screw Fixation"”.
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Screw fixation of implants to the spine
Bone screws are used to fix various implants to the human spine. Screw fixation can be difficult in osteoporotic bone because of its reduced strength. This research aimed to investigate screw fixation techniques in the spine. A questionnaire study, representing British and Irish spine surgeons, …
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Biomechanical Comparison of Lumbar Disc Replacements
… disc replacement with Maverick, and a pedicle screw fixation. It was hypothesized that structural designs differences of ProDisc-L and Maverick could be distinguished in both motion and loading patterns. It was also hypothesized that either disc replacements offered preservation of harvested …
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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 transverse …
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Distal Biceps Tendon Ruptures: A Comparison of Surgical Techniques and Outcomes
… amount of controversy over which method of fixation is the preferred option. In addition to the controversy over which surgical method to use, it has been recently discovered that the distal biceps tendon actually consists of two tendons, which contribute individually to the movements of the …
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흉요추부 골절의 수술적 치료 후 척추경 기기제거술의 효용성
… surgery after a posterior fusion with pedicle screw fixation for thoracolumbar fractures. The mean duration after the index surgery was 25.3±17.6 months. A control cohort of 38 consecutive patients with thoracolumbar fractures that had pedicle screw implants was enrolled. Subjects were followed …
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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 improve …
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Knöcherne Integration und Biokompatibilität eines neuen resorbierbaren Polymers zur Schraubenaugmentation im osteoporotischen Knochen
… of a new bioresorbable polymer for screw augmentation in the osteosynthesis of osteoporotic cancellous bone: The surgical treatment of an osteoporosis-associated fracture is a clinically relevant problem, which yet has no satisfactory solution. The fixation of conventional implants …
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Design Optimization and in-vitro Verification of a Bone-Retentive Device to Repair Comminuted Radial Head Fractures
… Thus, the preferred surgical open reduction and fixation (ORIF) methods which involve stabilizing the fracture using metal plates and screws. The main drawbacks of this method involve failure of fixation, particularly in more severely comminuted fractures. In these cases, revision surgery is …