Spine
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Eight cases of fibrous dysplasia (FD) of the mobile spine treated surgically at the same center were retrospectively reviewed. ⋯ The radiological features of spinal FD may be atypical. The rate of correct preoperative pathological diagnosis by computed tomography-guided biopsy was low for patients with suspected spinal FD. Vertebroplasty is probably a valuable therapeutic option for spinal FD with pathological fractures. Limited decompression and stability with vertebroplasty might be recommended for patients with neurological deficits.
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This was a cross-sectional study. ⋯ The modified LEFS had satisfactory psychometric properties in patients with LBP and could serve as a supplementary outcome measure to assess their activity limitations.
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Biomechanics of spinal hemiepiphysiodesis for fusionless scoliosis treatment using titanium implant.
In vitro study of the effect of hemiepiphyseal implant on biomechanical properties of porcine thoracic motion segments. ⋯ Implantation of a titanium clip-screw construct decreased range of motion by less than one-fifth, increased stiffness by one-third or less, and decreased the neutral zone by less than one-half. Range of axial translation decreased on the instrumented side and increased contralaterally. This study suggests that most of the flexibility of the spine is preserved in the immediate postoperative period after implantation of the spinal hemiepiphyseal construct.
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Case report. ⋯ Isthmic spondylolisthesis must be considered as a cause within VBI. Surgery presents good results.
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An in situ study using whole-organ culture system. ⋯ Trypsin-induced extracellular matrix damage resulted in a change of the disc's biomechanics. Cross-linker augmentation recovers the rheological and dynamic properties of moderately degenerated discs but not of the severely degenerated discs. The genipin cross-linker may be able to improve the proteoglycan depletion effect in the nucleus pulposus but may not be effective to restore the structural damage in the collagen molecule of the anulus fibrosus.