Journal of spinal disorders & techniques
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J Spinal Disord Tech · Jun 2008
Randomized Controlled TrialReliability of a magnetic resonance imaging-based grading system for cervical intervertebral disc degeneration.
This was a radiographic reliability study of a novel grading system for cervical intervertebral disc degeneration. ⋯ This grading system is comprehensive and easily applicable with sufficient reproducibility. It can be used as a common nomenclature for research and discussions.
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J Spinal Disord Tech · Jun 2008
Comparative StudyComparison of posterolateral fusion with and without additional posterior lumbar interbody fusion for degenerative lumbar spondylolisthesis.
The surgical approach that should be used for degenerative spondylolisthesis (DS) is a controversial issue. Decompression and posterolateral fusion (PLF) with or without lumbar interbody fusion is widely used. Many studies have compared the outcomes of these 2 approaches, but the appropriate indications for these approaches are still unclear. The authors retrospectively studied the effects of posterior lumbar interbody fusion (PLIF) after PLF for the treatment of DS. ⋯ This study suggests that preoperative segmental instability may be a criterion determining whether an additional PLIF would be beneficial in the treatment of lumbar DS.
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J Spinal Disord Tech · Jun 2008
Cervical spine motion in manual versus Jackson table turning methods in a cadaveric global instability model.
A study of spine biomechanics in a cadaver model. ⋯ The data suggest that the manual transfer technique produces 2 to 3 times more cervical spine angular motion than the Jackson table method of transfer. The use of a collar provides significant benefit in limiting spine motion that is only observed in axial rotation. Choice of headrest does have a significant effect on the amount of motion allowed during turning, with the Foam Pillow and Prone View generally providing more effective stabilization compared with the Mayfield.
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J Spinal Disord Tech · Jun 2008
ReviewVertebral artery injuries associated with cervical spine injuries: a review of the literature.
Literature review. ⋯ VAIs can occur in association with cervical spine trauma and have the potential for neurological ischemic events. Screening for and treatment of asymptomatic VAIs may be considered, but it is unclear based on the current literature whether these strategies improve outcomes.
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J Spinal Disord Tech · Jun 2008
Internal and external responses of anterior lumbar/lumbosacral fusion: nonlinear finite element analysis.
Determination of external and internal responses of the human lumbosacral spine using a validated 3-dimensional finite element model. ⋯ At the fused level, the caudal fusion imparted additional rigidity under flexion to the lumbosacral joint. Both fusion masses added flexibility to the adjacent segment. Under both fusion masses, increased facet joint pressure in the lumbosacral joint indicates the susceptibility of this transitional joint to long-term biomechanics-induced consequences. Increased facet joint pressures with the rostral fusion indicate that the posterior complex responds with increased load sharing, and may predispose the spine to facet-related arthropathy. Increased stresses in the adjacent disc with the caudal fusion under both modes of loading imply the potential to disc-related changes owing to long-term physiologic loading.