Journal of spinal disorders & techniques
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Cadaveric specimens were measured to determine appropriate placement for C1 lateral mass screws. Instrumentation guidelines were developed and used to instrument a series of cadaveric specimens. Clinical experience with C1 lateral mass fixation was reviewed to evaluate results. Postoperative computed tomographic (CT) scans were reviewed to evaluate screw placement. ⋯ C1 lateral mass fixation is a safe alternative for upper cervical fixation with several potential advantages versus other techniques, but further clinical evaluation is warranted.
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J Spinal Disord Tech · Oct 2009
Biomechanical assessment of minimally invasive decompression for lumbar spinal canal stenosis: a cadaver study.
A biomechanical study on the cadaveric human lumbar spine. ⋯ These results go toward supporting a minimally invasive bilateral decompression. Minimally invasive bilateral decompression, as opposed to a conventional medial facetectomy, preserves the facet joints as much as possible. Preserving the facet joints during the decompression should produce less postoperative instability.
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J Spinal Disord Tech · Oct 2009
Comparative StudyReconstructive techniques study after anterior decompression of multilevel cervical spondylotic myelopathy.
Retrospectively compared 2 reconstructive techniques after the anterior decompression of multilevel cervical spondylotic myelopathy. ⋯ This study clearly demonstrates that, adequate decompression can be achieved for the multilevel cervical spondylotic myelopathy with both methods, and the hybrid method offers better biomechanical stability and fusion results than the corpectomy method, and obviates the need for staged circumferential procedures.
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J Spinal Disord Tech · Oct 2009
Comparative StudyA comparative MRI study of upper and lower lumbar motion segments in patients with low back pain.
The study is a prospective cross-sectional study of 514 patients with low back pain and sciatica. ⋯ The study revealed that pathological alteration in vertebral end plates is the same in upper and lower lumbar bony tissues as detected by Modic's criteria, whereas those of intervertebral discs is different regarding spinal level and risk factor.
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J Spinal Disord Tech · Oct 2009
Comparative StudyComparison of the percutaneous screw placement precision of isocentric C-arm 3-dimensional fluoroscopy-navigated pedicle screw implantation and conventional fluoroscopy method with minimally invasive surgery.
Retrospective clinical study to compare the percutaneous screw placement precision of isocentric C-arm (Iso-C) 3-dimensional fluoroscopy-navigated pedicle screw implantation and conventional fluoroscopy. ⋯ This study demonstrates the feasibility of placing percutaneous posterior lumbar pedicle screws with the assistance of Iso-C 3-dimensional navigation.