Spine
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Changes in spontaneous behavior was studied in rats after a controlled puncture of a lumbar intervertebral disc. ⋯ Puncture of a lumbar intervertebral disc in the rat produces changes in spontaneous behavior mainly seen as increased "grooming" and "wet-dog shakes," 2 behaviors that have been suggested to indicate stress and pain.
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Do corticosteroids produce additional benefit in nerve root infiltration for lumbar disc herniation?
Experimental animal study. ⋯ NRI prevented mechanical allodynia. However, no additional benefit from using corticosteroid was identified, suggesting that corticosteroid may be unnecessary for NRI.
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A retrospective study. ⋯ Bone union occurred more than 2 years after posterior fusion with PS in about 30% of patients with delayed union. Its occurrence was related to the intervertebral range of motion and disc height. Firm bone union was not necessarily essential for good clinical results.
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An observational prospective cohort study. ⋯ For trained observers of a population of patients with CLBP in a rehabilitation setting, the interobserver reliability of the Waddell score was moderate and the intraobserver reliability was good. No influence of clinical characteristics was found on interobserver reliability. To optimize the homogeneity and variability of the Waddell score, we recommend summing up the individual signs instead of summing up the categories.
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Multicenter Study
Vertebral artery injury during cervical spine surgery: a survey of more than 5600 operations.
Retrospective survey. ⋯ The incidence of VAI during cervical spine surgery from this survey was similar to or slightly less than that in the literature. Tamponade was effective in many cases, but prompt consultation with an endovascular team is recommended if the bleeding is uncontrollable. Preoperative careful evaluation of the vertebral artery seems to be most important to prevent iatrogenic VAI and to avoid postoperative neurologic sequelae.