Spine
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This is a retrospective review of 265 consecutive patients with scoliosis treated by posterior spinal fusion (PSF) and 2990 postoperative radiographs at a single institution. ⋯ Only 0.60% of postoperative images (18/2990) demonstrated an implant-related complication, and in the absence of clinical indications, none of these patients required surgical intervention. Isolated postoperative radiographs did not lead to any change in management, and consideration should be given to reviewing current protocols for plain radiographs as a monitoring tool after PSF.
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The histological comparative study was performed on chordoma and notochordal cell rests (NCRs). ⋯ Our study results supported histological similarity and homology of NCRs coexisting in chordoma and in fetal nucleus pulposus. Brachyury activation probably takes an important role in chordoma tumoregenesis.
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Retrospective study developing diagnostic criteria. ⋯ ExGBB seems to be a far more reliable and accurate to determine anterior cervical fusion. The diagnostic criteria using bone bridging should be different based on the intradiscal materials. With cages in particular, InGBB seems unreliable and ExGBB is necessary to determine anterior cervical fusion.
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In vivo experimental porcine study. ⋯ Discography induced pressure increase in adjacent discs in a degenerate disc model, something not reported earlier. If present, also in human spine pressure transmission, may be a potential cause for false positive discography responses.
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Randomized Controlled Trial Multicenter Study
rhBMP-2 for posterolateral instrumented lumbar fusion: a multicenter prospective randomized controlled trial.
Multicenter randomized controlled trial. ⋯ The use of rhBMP-2 for instrumented posterolateral lumbar surgery significantly improves the chances of radiographical fusion compared with the use of autograft. However, there is no associated improvement in clinical outcome within a 4-year follow-up period. These results suggest that use of rhBMP-2 should be considered in cases where lumbar arthrodesis is of primary concern.