Journal of spinal disorders & techniques
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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.
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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 StudyCadaveric evaluation of minimally invasive posterolateral thoracic corpectomy: a comparison of 3 approaches.
A cadaver study comparing 3 different minimally invasive approaches to the anterior thoracic spine. ⋯ Minimally invasive thoracic corpectomy is feasible and a 6 cm approach off of midline appears optimal.
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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
Fracture-related thoracic kyphotic deformity correction by single-stage posterolateral vertebrectomy with circumferential reconstruction and stabilization: Outcomes in 30 cases.
This paper is a retrospective chart review. ⋯ Thoracic kyphotic correction is possible through a prone single-stage simultaneous anterior vertebrectomy and posterior reconstruction. Sufficient anterior and posterior correction of instability and fracture using the SUMC technique is possible with similar results to the traditional 2-stage approach.