Spine
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Comparative Study
Tissue transglutaminase expression and activity in human ligamentum flavum cells derived from thoracic ossification of ligamentum flavum.
The study was undertaken to compare the expression and activity of tissue transglutaminase (TG2) in human ligamentum flavum cells derived from ossification of the ligamentum flavum (OLF) and non-OLF patients. ⋯ TG2 expression and enzyme activity are upregulated in the OLF cells and TG2 may be involved in the pathologic process of OLF.
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Retrospective review. ⋯ SAI pelvic fixation produces better correction of pelvic obliquity than do previous techniques. Radiographic and clinical anchor stability is satisfactory at 2-year follow-up.
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Case Reports
Descending aortic injury by a thoracic pedicle screw during posterior reconstructive surgery: a case report.
Case report. ⋯ Use of pedicle screw instrumentation has the potential to cause major vascular injury during posterior spinal surgery, and measures to prevent this complication must be taken. Timely diagnosis and treatment are essential to prevent both early and delayed complications and death.
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In vivo experimental study. ⋯ Discography of porcine discs induces a pressure increase in adjacent discs. A similar pressure transfer during human clinical discography might elicit false-positive pain reactions.