Spine
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A prospective clinical study. ⋯ The lumbar extension test has no predictive value for the outcome after surgical treatment of LSS.
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A study of the histologic changes of the intervertebral discs (IVDs) in biglycan (Bgn)-deficient mice. ⋯ Bgn deficiency significantly accelerated disc degeneration.
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Biomechanical study using human cadaveric cervical spines. ⋯ Occipitoatlantoaxial stabilization techniques using C2 crossing laminar screws, C2 pedicles screws, and C1-C2 transarticular screws offer similar biomechanical stability. Using the C2 crossing laminar screw technique may offer an advantage over the other techniques due to the reduction of the risk to the vertebral artery during C2 screw placement.
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Comparative Study
Traumatic cervical discoligamentous injuries: correlation of magnetic resonance imaging and operative findings.
Retrospective review using prospectively collected data. ⋯ The ability of cervical MRI to detect surgically verified disruptions of the ALL, intervertebral disc, and PLL varied depending on the structure examined. MRI was sensitive but not specific for disc injury, and specific but not sensitive to ALL and PLL disruption. In this series, the comparison of cervical MRI and operative findings indicated that MRI was reliable only when positive for ALL and disc injury, and a reasonably reliable indicator of PLL status only when negative for PLL injury. Additionally, the high false-negative rates for ALL and PLL injury are concerning.
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A historical cohort study. ⋯ Good reproducibility and agreement using the first and second vertebrae above the UIV to measure the angle of PJK was found in this study.