Clinical neurology and neurosurgery
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Device subsidence is a well-known complication following cervical disc arthroplasty. Its occurrence has been closely tied with the endplate-implant contact interface. But current literature on the geometry of cervical endplate is very scarce. The aim of this anatomical investigation was to analyze geometry of inferior endplates of the cervical vertebrae, thereby identifying the common endplate shape patterns and providing morphological reference values consummating the design of the implant. ⋯ The exact shape and geometry of cervical endplate are crucial for the design and improvement of cervical disc prosthesis. Gender difference of sagittal and transverse diameters of cervical endplate should be given more attention when implanting a disc prosthesis. These endplate geometrical parameters should be taken into consideration when calculating most suitable geometric parameters of new disc prosthesis.
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Clin Neurol Neurosurg · Mar 2016
Cost-effectiveness analysis of CTA and LP for evaluation of suspected SAH after negative non-contrast CT.
Diagnostic workup of patients presenting with thunderclap headache and negative initial head CT remains a challenge, with most commonly employed strategies being lumbar puncture (LP) and CT angiography (CTA). The objective of this study was to determine the cost-effectiveness of these options. ⋯ LP should remain the preferred strategy for evaluation of SAH in patients presenting with thunderclap headache and negative non-contrast head CT. CTA is not an effective replacement, from either a utility or cost perspective.