Search Results - "Crawford, N R"

Comparative anatomy of the porcine and human thoracic spines with reference to thoracoscopic surgical techniques by BOZKUS, H, CRAWFORD, N. R, CHAMBERLAIN, R. H, VALENZUELA, T. D, ESPINOZA, A, YÜKSEL, Z, DICKMAN, C. A

“…This study compared porcine and human thoracic spine anatomies for a better understanding of how structures encountered during thoracoscopy differ between…”
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Construction of local vertebral coordinate systems using a digitizing probe : Technical note by CRAWFORD, N. R, DICKMAN, C. A

“…When studying three-dimensional motion of multiple-vertebra spine segments in vitro, it is often desirable to report the kinematics at the individual vertebral…”
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An apparatus for applying pure nonconstraining moments to spine segments in vitro by Crawford, N R, Brantley, A G, Dickman, C A, Koeneman, E J

“…This article reports on the design and use of a new apparatus for creating and monitoring pure, relatively nonconstraining moments to induce flexion/extension,…”
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A biomechanical evaluation of occipitocervical instrumentation : screw compared with wire fixation by HURLBERT, R. J, CRAWFORD, N. R, WON GYU CHOI, DICKMAN, C. A

“…The purpose of this study was to compare cable techniques used in occipitocervical fixation with two types of screw fixation. The authors hypothesized that…”
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Stability of the craniovertebral junction after unilateral occipital condyle resection : a biomechanical study by VISHTEH, A. G, CRAWFORD, N. R, MELTON, M. S, SPETZLER, R. F, SONNTAG, V. K. H, DICKMAN, C. A

“…The authors sought to determine the biomechanics of the occipitoatlantal (occiput [Oc]-C1) and atlantoaxial (C1-2) motion segments after unilateral gradient…”
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Biomechanical characteristics of C1-2 cable fixations by DICKMAN, C. A, CRAWFORD, N. R, PARAMORE, C. G

“…The biomechanical characteristics of four different methods of C1-2 cable fixation were studied to assess the effectiveness of each technique in restoring…”
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The effects of dexamethasone on bone fusion in an experimental model of posterolateral lumbar spinal arthrodesis by SAWIN, Paul D, DICKMAN, Curtis A, CRAWFORD, Neil R, MELTON, M. Stephen, BICHARD, William D, SONNTAG, Volker K. H

“…The use of corticosteroid agents during the healing phase after spinal arthrodesis remains controversial. Although anecdotal opinion suggests that…”
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Biomechanics of Grade I degenerative lumbar spondylolisthesis. Part 1 : In vitro model by CRAWFORD, Neil R, CAGLI, Sedat, SONNTAG, Volker K. H, DICKMAN, Curtis A

“…The authors sought to create and to evaluate an in vitro model of Grade I degenerative (closed-arch) spondylolisthesis. The model of spondylolisthesis was…”
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Differential biomechanical effects of injury and wiring at C1-C2 by CRAWFORD, N. R, HURLBERT, R. J, WON GYU CHOI, DICKMAN, C. A

“…An in vitro study compared the biomechanics of the upper cervical spine among three groups of cadaveric specimens, each with a different source of instability:…”
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Biomechanics of Grade I degenerative lumbar spondylolisthesis. Part 2 : Treatment with threaded interbody cages/dowels and pedicle screws by CAGLI, Sedat, CRAWFORD, Neil R, SONNTAG, Volker K. H, DICKMAN, Curtis A

“…The authors sought to determine the biomechanical effectiveness of threaded interbody cages or dowels compared with that achieved using pedicle screw…”
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Comparative mechanical properties of spinal cable and wire fixation systems by DICKMAN, C. A, PAPADOPOULOS, S. M, CRAWFORD, N. R, BRANTLEY, A. G. U, GEALER, R. L

“…Surgical spinal cable and wire fixation systems were tested mechanically using standardized methodologies. To compare the relative mechanical properties and…”
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Biomechanical effects of transthoracic microdiscectomy by BROC, G. G, CRAWFORD, N. R, SONNTAG, V. K. H, DICKMAN, C. A, VIDEMAN, T, BATTIE, M. C

“…Nondestructive flexibility testing was performed to quantify biomechanical parameters of human cadaveric thoracic spines before and after microdiscectomy. To…”
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Biomechanical comparison of C1-C2 posterior fixations. Cable, graft, and screw combinations by Naderi, S, Crawford, N R, Song, G S, Sonntag, V K, Dickman, C A

“…Four combinations of cable-graft-screw fixation at C1-C2 were compared biomechanically in vitro using nondestructive flexibility testing. Each specimen was…”
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Comparative pull-out strength of tapped and untapped pilot holes for bicortical anterior cervical screws by RONDEROS, J. F, JACOBOWITZ, R, SONNTAG, V. K. H, CRAWFORD, N. R, DICKMAN, C. A

“…This biomechanical study analyzed the axial pull-out strength of tapped versus untapped pilot holes for bicortical screws in the anterior cervical spine. To…”
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Neuromuscular stimulation selectivity of multiple-contact nerve cuff electrode arrays by Sweeney, J D, Crawford, N R, Brandon, T A

“…The feasibility of an electrical stimulation method selectively for activating skeletal muscles innervated by a common peripheral nerve trunk has been…”
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A new technique for determining 3-D joint angles: the tilt/twist method by Crawford, Neil R., Yamaguchi, Gary T., Dickman, Curtis A.

“…Objective. To develop a new method of representing 3-D joint angles that is both physically meaningful and mathematically stable. Design. The two halves of a…”
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Morphology and kinematics of the baboon upper cervical spine. A model of the atlantoaxial complex by Dickman, C A, Crawford, N R, Tominaga, T, Brantley, A G, Coons, S, Sonntag, V K

“…Quantitative and qualitative analyses were performed to compare the anatomy and biomechanics of baboon and human upper cervical spines. This study examined the…”
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The spinal lax zone and neutral zone: measurement techniques and parameter comparisons by Crawford, N R, Peles, J D, Dickman, C A

“…The neutral zone (NZ) is a well-established parameter that describes the loose region of the spinal range of motion (ROM) where the spine moves easily with…”
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Biomechanical comparison of anterior cervical plating and combined anterior/lateral mass plating by Adams, Mark S, Crawford, Neil R, Chamberlain, Robert H, Bse, Sonntag, Volker K.H, Dickman, Curtis A

“…Background context: Previous studies showed anterior plates of older design to be inadequate for stabilizing the cervical spine in all loading directions. No…”
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Biomechanical effects of progressive anterior cervical decompression by Chen, T Y, Crawford, N R, Sonntag, V K, Dickman, C A

“…A repeated-measures in vitro flexibility test was performed. To determine the biomechanical functions of tissues resected during anterior cervical…”
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