Articles: surgery.
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Review Meta Analysis
Pedicle screw insertion accuracy with different assisted methods: a systematic review and meta-analysis of comparative studies.
Studies revealed that navigation systems that provided intraoperative assistance might improve pedicle screw insertion accuracy, and also implied that different systems provided different pedicle screw insertion accuracy. A systematic review and meta-analysis was conducted to focus on the pedicle screw insertion accuracy with or without the assistance of image-guided system, and the variance among the different navigation systems. Comparative studies were searched on pedicle screw insertion accuracy between conventional and navigated method, and among different navigation systems. ⋯ Our review showed that navigation provided a higher accuracy in the placement of pedicle screws compared with conventional methods. The superiority of navigation systems was obvious when they were applied to abnormal spinal structure. Although no strong in vivo evidence has detected significantly different pedicle screw placement accuracy among the three major navigation systems, meta-analysis revealed the variance in pedicle screw insertion accuracy with different navigation methods.
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Comparative Study
Computer tomography assessment of pedicle screw placement in lumbar and sacral spine: comparison between free-hand and O-arm based navigation techniques.
Transpedicular screw fixation has been accepted worldwide since Harrington et al. first placed pedicle screws through the isthmus. In vivo and in vitro studies indicated that pedicle screw insertion accuracy could be significantly improved with image-assisted systems compared with conventional approaches. The O-arm is a new generation intraoperative imaging system designed without compromise to address the needs of a modern OR like no other system currently available. ⋯ Screw implantation was performed during PLIF or TLIF mainly for spondylolisthesis, osteochondritis and post-laminectomy syndrome. The accuracy rate in our work was 94.1% in the free-hand group compared to 99% in the O-arm navigated group. Thus it was concluded that free-hand technique will only be safe and accurate when it is in the hands of an experienced surgeon and the accuracy of screw placement with O-arm can reach 100%.
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Case Reports
Confocal microscopy for the histological fluorescence pattern of a recurrent atypical meningioma: case report.
Fluorescence-guided resection with 5-aminolevulinic acid (5-ALA), which has shown promising results in the resection of malignant gliomas, has been used for meningioma resection in an attempt to more clearly delineate the tumor margin. However, no article has investigated the fluorescence pattern of meningiomas on a histological level. Understanding the microscopic pattern of fluorescence could help assess the precision and utility of using 5-ALA for these tumors. We present the case of a recurrent atypical meningioma operated on with 5-ALA fluorescence-guided resection for delineation of tumor tissue from surrounding uninvolved dura. ⋯ Fluorescence guidance allowed clear intraoperative delineation of tumor tissue from adjacent, uninvolved dura. On a microscopic level, there was a very close correlation of fluorescence with tumor, but some tumor cells did not fluoresce.
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Journal of neurosurgery · Jun 2011
Quality of life in patients with intracranial gliomas: the impact of modern image-guided surgery.
Outcome following brain tumor operations is often assessed by health professionals using various gross function scales. However, surprisingly little is known about how modern glioma surgery affects quality of life (QOL) as reported by the patients themselves. In the present study the authors aimed to assess changes in QOL after glioma surgery, to explore the relationship between QOL and traditional outcome parameters, and to examine possible predictors of change in QOL. ⋯ The surgical procedures per se may not significantly alter QOL in the average patient with glioma; however, new deficits have a major undesirable effect on QOL. It seems that the active use of intraoperative ultrasonography may be associated with a preservation of QOL. The EQ-5D seems like a good outcome measure with a strong correlation to traditional variables while offering a more detailed description of outcome.
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Minim Invasive Neurosurg · Jun 2011
Frameless image-guided neuroendoscopy training in real simulators.
Over the last decade, neuroendoscopy has re-emerged as an interesting option in the management of intraventricular lesions in both children and adults. Nonetheless, as it has become more difficult to use cadaveric specimens in training, the development of alternative methods was vital. The aim of this study was to analyze the performance of a real simulator, in association with image-guided navigation, as a teaching tool for the training of intraventricular endoscopic procedures. ⋯ The use of real simulators in association with image-guided navigation proved to be an effective tool in training for neuroendoscopy.