The Effect of Vertebral Body Geometry on Pedicle Screw Fixation Biomechanics in Human Lumbar Spine
نویسندگان
چکیده
Ata M. Kiapour, Ph.D., Laura E. Buckenmeyer, M.S., Kristophe J. Karami, D.O., Vijay K. Goel, Ph.D., Teck M. Soo, M.D., Constantine K. Demetropoulos, PhD. Boston Children's Hospital, Harvard Medical School, Boston, MA, USA, University of Toledo, Toledo, OH, USA, Johns Hopkins University, Baltimore, MD, USA, St John Providence Hospital, Southfield, MI, USA, Johns Hopkins University, Laurel, MD, USA.
منابع مشابه
Accuracy Assessment of Freehand Pedicular Screw Placement
Background: The purpose of this prospective study was to determine the accuracy of pedicular screw insertion withoutthe use of fluoroscopy.Methods: This study was conducted on patients with spinal diseases in need of pedicular screw fixation and fusion.The included patients suffered from such conditions as vertebral fracture, spinal stenosis, kyphosis, tumor, and pelvicf...
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OBJECT The authors sought to determine the biomechanical effectiveness of threaded interbody cages or dowels compared with that achieved using pedicle screw instrumentation in resisting Grade I lumbar spine degenerative spondylolisthesis. METHODS Thirty-three levels obtained from seven cadaveric lumbar spines were instrumented with cages or dowels, pedicle screw/rod instrumentation, or both. ...
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BACKGROUND In regard to the fixation using a pedicle screw (PS) and rod system, the mechanism from the onset of the clear zone up to the development of loosening of the pedicle screw is not completely clarified. The purpose of this study is to determine the cause of the pedicle screw loosening by performing a biomechanical study with three-dimensional movie analysis. METHODS Ten PS fixation m...
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BACKGROUND CONTEXT The lateral transpsoas approach to interbody fusion is gaining popularity because of its minimally invasive nature and resultant indirect neurologic decompression. The acute biomechanical stability of the lateral approach to interbody fusion is dependent on the type of supplemental internal fixation used. The two-hole lateral plate (LP) has been approved for clinical use for ...
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DESIGN Retrospective case study. OBJECTIVE Percutaneous pedicle screw (PPS) techniques do not allow direct visualization and may lead to erroneous screw placement. A technique utilizing only fluoroscopy is described. Verification of its accuracy and morphometric validation are presented. BACKGROUND Minimally invasive spine surgical techniques, particularly PPS placement, have been growing i...
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