Spine
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Comparative Study
Adjacent-level range of motion and intradiscal pressure after posterior cervical decompression and fixation: an in vitro human cadaveric model.
This in vitro human cadaveric study measured adjacent-level kinematics after posterior cervical decompression and fixation. ⋯ For C3-C6 laminectomy, instrumentation to C7 significantly decreased flexion/extension ROM and intradiscal pressure at C6-C7 without significantly increasing either measure at C2-C3 or C7-T1 relative to C3-C6 fixation. In the setting of a C3-C7 laminectomy, when instrumenting to either C2 or T2, consideration should be given to including both levels within these constructs.
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Case Reports
Delayed formation of a devastating granulomatous process after metal-on-metal lumbar disc arthroplasty.
A case report. ⋯ Metal-on-Metal TDA devices can induce a tumor-like growth with devastating consequences. The reduction of device motion by posterior stabilizing surgery does not seem to stop the growth of the granulomatous mass. The device has to be removed.
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Retrospective, case-control study. ⋯ The results of this study indicate that LOVBH greater than 50% and LK greater than 20° are not predictive of PLC injury in thoracolumbar burst fractures. Translation greater than 3.5 mm was associated with PLC injury. The PLC and neural elements should be directly assessed with magnetic resonance imaging if there is clinical concern.
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Experimental animal study of spinal cord injury (SCI), using a cell delivery system. ⋯ The combination of intrathecal transplantation of CD133 cells and application of a magnetic field at the site of injury is a possible therapeutic strategy to treat rat SCI and may therefore find application in clinical settings.
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Multicenter Study
The association of patient characteristics and spinal curve parameters with Lenke classification types.
Retrospective review. ⋯ Lenke types vary by sex, frequency magnitude, patient age, and patient self-image, which should be considered in designing studies.