Journal of spinal disorders & techniques
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J Spinal Disord Tech · Oct 2016
Using a Combination of Intralaminar and Pedicular Screw Constructs for Enhancement of Spinal Stability and Maintenance of Correction in Patients With Sagittal Imbalance: Clinical Applications and Finite Element Analysis.
Case series and finite element analysis. ⋯ Addition of an ILS construct to PS construct decreases osteotomy line deformation and reduces stress on pedicle fixation points, and the combination improves fixation stability over the conventional PS-rod technique.
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J Spinal Disord Tech · Aug 2016
Clinical Outcomes and Radiologic Changes Following Microsurgical Bilateral Decompression via a Unilateral Approach in Patients With Lumbar Canal Stenosis and Grade I Degenerative Spondylolisthesis With a Minimum 3-year Follow-up.
A retrospective study. ⋯ Despite small case series with retrospective design and the absence of a control group, our study suggests that bilateral decompression via a unilateral approach in patients with LSS and grade 1 DS showed good mid-term clinical outcomes, despite an increase in slip percentage.However, more marked increases in slippage were observed in patients with sagittal motion in spondylolisthesis levels on preoperative dynamic x-ray, than in patients without sagittal motion. Therefore, bilateral decompression via a unilateral approach can aggravate symptoms related to instability in patients with preoperative sagittal motion on dynamic x-ray, and needs a longer term follow-up than in our study.
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J Spinal Disord Tech · Aug 2016
Multicenter StudyTwo-Year Evaluation of the X-STOP Interspinous Spacer in Different Primary Patient Populations With Neurogenic Intermittent Claudication due to Lumbar Spinal Stenosis.
Multicenter, prospective single-arm study in patients diagnosed with neurogenic intermittent claudication because of lumbar spinal stenosis. ⋯ Overall data are consistent with the randomized pivotal Investigational Device Exemption trial. On the basis of the COS cohort which was subject to several additional years of failed conservative treatment, overall success rates do not improve as greatly in patients with long-standing lumbar spinal stenosis symptoms.
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J Spinal Disord Tech · Aug 2016
Local Treatment of Osteoporotic Sheep Vertebral Body with Calcium Sulfate for Decreasing the Potential Fracture Risk: Microstructural and Biomechanical Evaluations.
In this study, calcium sulfate (CS) was injected through pedicle into the osteoporotic vertebral body in vivo in sheep, and micro-computed tomography analysis, histologic observation, and biomechanical test were performed. ⋯ The preliminary data suggest that local injection of CS can significantly improve the amount, density, and biomechanical performance of the bone trabeculae in osteoporotic vertebra. The local injection of CS could also be used as a new method to improve the physical microstructure and augment the mechanical properties in "high-risk" vertebral bodies, decreasing the potential fracture risk of patients with osteoporosis. The strict inclusion and exclusion criteria should be performed before treatment.
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J Spinal Disord Tech · Jun 2016
Surgical Outcome of Percutaneous Endoscopic Interlaminar Lumbar Discectomy for Highly Migrated Disc Herniation.
Technical report. ⋯ PEID may be applied comfortably even for less-experienced surgeons because of the familiar anatomy with open surgery.