Journal of spinal disorders & techniques
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J Spinal Disord Tech · Oct 2008
MR findings of exaggerated fluid in facet joints predicts instability.
Retrospective radiographic review. ⋯ Exaggerated fluid in the facets seen on axial MRI is significantly suggestive of spondylolisthesis on standing films, even if this is not appreciated on the supine sagittal MRI sequences. This is the first time that the relative incidence of subtle instability with and without this finding has been evaluated to our knowledge.
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J Spinal Disord Tech · Aug 2008
Correlation of ProDisc-C failure strength with cervical bone mineral content and endplate strength.
This study was designed to evaluate the effectiveness of preoperative computed tomography (CT) scan in predicting endplate strength. ⋯ This study demonstrates the utility of a preoperative QCT scan in predicting the failure stress of the cervical endplate before total disc replacement. This information may potentially decrease early complications of device subsidence or endplate fracture.
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J Spinal Disord Tech · Aug 2008
Comparative StudyPainful disc lesion: can modern biplanar magnetic resonance imaging replace discography?
A new magnetic resonance imaging (MRI) classification of disc degeneration was correlated with discography. It was also studied for intraobserver and interobserver variability in interpreting disc abnormality and for the capability in predicting symptomatic disc. ⋯ Although MRI is an excellent investigation for assessing disc morphology it should be interpreted along with discography findings before planning fusion surgery. The proposed MRI classification is a useful aid in predicting painful degenerative disc. The utility of HIZs and end plate changes is limited due to low sensitivity.
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J Spinal Disord Tech · Aug 2008
Comparative Study Clinical TrialRevision lumbar arthrodesis for the treatment of lumbar cage pseudoarthrosis: complications.
A study documenting major complications encountered in revision procedures for lumbar cage pseudoarthrosis. ⋯ Circumferential revision including cage removal, structural allograft placement, and posterior stabilization is associated with increased perioperative complications. Although an anterior approach showed increased interbody fusion rates, this technique did not lead to more superior clinical outcomes based on VAS scores. It remains to be shown by larger prospective studies if there is a true difference in outcome between these 2 groups that will justify the increased perioperative morbidity associated with attempted cage removal.
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J Spinal Disord Tech · Aug 2008
Randomized Controlled Trial Multicenter StudyMotion analysis of bryan cervical disc arthroplasty versus anterior discectomy and fusion: results from a prospective, randomized, multicenter, clinical trial.
Prospective, randomized, multicenter clinical trial. ⋯ The Bryan disc treatment, on average, maintained flexion/extension range of motion without degradation over 24 months. No ectopic bridging ossification was seen in any of the Bryan discs and no subsidence or displacement of the Bryan disc occurred.