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Trans-sacral screw fixation in the treatment of high dyplastic developmental spondylolisthesis

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World Journal of Clinical Cases 2013年第3期1卷 116-120页

作者： Alessandro Landi Nicola marotta Cristina Mancarella Roberto Tarantino Roberto Delfini Department of Neurology and Psychiatry Division of NeurosurgeryUniversity of Rome"Sapienza"00165 RomeItaly

We describe the case of a 67-year-old woman with L5-S1 ontogenetic spondylolisthesis treated with pedicle fixation associated with interbody arthrodesis performed with S1-L5 trans-sacral screwing according to the technique of Bartolozzi. The procedure was followed by a wide decompressive laminectomy. The patient had a progressive improvement of the symptoms which gradually disappeared in 12 mo. The radiograph at 6 and 12 mo showed complete fusion system. The choice of treatment in L5-S1 ontogenetic spondylolithesis is related to a correct clinical and diagnostic planning(X-ray, computer tomography magnetic resonance imaging, Measurement). In particular, the severity index and the square of unstable zone, and the standard measurements already described in the literature, are important to understand and to plane the correct surgical strategy, that require, in most of the times, fusion and interbody artrodesis.

关键词： High-dysplastic developmental spondylolisthesis Spondylolisthesis Trans-sacral screw Pelvic balance Spinopelvic imbalance

Anterior Surgery in Multilevel Stenosis of the Lower Cervical Spine: Technical Indications and Personal Experience. 12 Years Follow-Up

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International Journal of Clinical Medicine 2014年第4期5卷 157-161页

作者： Alessandro Landi Nicola marotta Cristina Mancarella Carlotta Morselli Roberto Tarantino Andrea Ruggeri Roberto Delfini Department of Neurology and Psychiatry Division of Neurosur-gery University of Rome “Sapienza” Roma Italy

Objective: cervical spondylotic myelopathy is a progressive degenerative cervical spine disease. During later stages of segmental degeneration, kyphosis of the cervical spine can occur and further compromise the spinal cord and nerve roots. Optimal surgical approach remains controversial. The choice to perform an anterior, posterior or combined approach depends on: sagittal alignment, number of involved levels, main compression localization, and clinical status. The anterior approach is recommended when compression involves primarily anterior horn of spinal cord. Methods: between January 2001 and December 2005, 121 patients (42 F, 79 M, mean age 62 years) were operated for cervical spondylosis (98 myelopathy, 23 radiculopathy). Anterior surgical approach was performed in 81 patients. 63 patients were operated performing multilevel discectomy and fusion (ACDF) and 18 patients performing corpectomy and fusion and anterior plating (ACCF). Preoperative documentation collected consisted of cervical X-ray (static-dynamic), cervical spine TC, cervical MRI. Clinical documentation permitted us to obtained clinical status of each patient based on JOA, NDI and VAS. A Clinical and radiological follow-up was performed at 1 month, 3 months, 1 year, 6 years, 12 years. Results: the fusion rate was calculated based on the static and dynamic X-ray (flexion and extension position), only a little percentage of patients underwent CT scan. There were no significant differences between ACDF and ACCF in clinical outcome at 6 years evaluated by VAS and NDI. The rate of fusion at 6 years for 2 levels ACCF (92%) was higher than that for 2 levels ACDF (86%) but is not statistically significative. Conclusion: classifying degenerative disease and biomechanics feature, preoperatively in necessary to guide the surgeon to choose the best anterior approach for cervical spondylosis.

关键词： Corpectomy Discectomy Multilevel Cervical Spine

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美军高性能救护机

航空军医 1994年第2期22卷 122-123页

作者： marotta JM 安瑞卿

目前美国陆军医疗卫生部(AMEDD)正在发展一个提高未来战场医疗后送支援的新飞机系统。继新型UH-60Q“黑鹰”救护直升机后,高性能救护机(HCAA)是又一种新创的救护机。

关键词：救护机高性能医疗后送救护直升机医疗机构美国陆军液体加热器控制单元国民警卫队飞机系统

First description of cervical intradural thymoma metastasis

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World Journal of Clinical Cases 2015年第11期3卷 946-950页

作者： Nicola marotta Cristina Mancarella Davide Colistra Alessandro Landi Demo Eugenio Dugoni Roberto Delfini Department of Neurology and Psychiatry Division of Neurosurgery University of Rome "Sapienza"

Thymoma and thymic carcinoma are rare epithelial tumors, which originate from the thymus gland. According to the World Health Organization there are "organotypic"(types A, AB, B1, B2, and B3) and "non-organotypic"(thymic carcinomas) thymomas. Type B3 thymomas are aggressive tumors, which can metastasize. Due to the rarity of these lesions, only 7 cases of extradural metastasis are described in the literature. We report the first and unique case of a man with cervical intradural B3 thymoma metastasis. A 46-year-old man underwent thymoma surgical removal. The year after the procedure he was treated for a parietal pleura metastasis. In 2006 he underwent cervical-dorsal extradural metastasis removal and C5-Th1 stabilization. Seven years after he came to our observation complaining left cervicobrachialgia and a reduction of strength of the left arm. He underwent a cervical spine magnetic resonance imaging, which showed a new lesion at the C5-C7 level. The patient underwent a surgery for the intradural B3 thymoma metastasis. Neurological symptoms improved although the removal was subtotal. He went through postoperative radiation therapy with further mass reduction. Spinal metastases are extremely rare. To date, only 7 cases of spinal extradural metastasis have been described in the literature. This is the first case of spinal intradural metastasis. Early individuation of these tumors and surgical treatment improve neurological outcome in patients with spinal cord compression. A multimodal treatment including neoadjuvant chemotherapy, surgery and postoperative radiation therapy seems to improve survival in patients with metastatic thymoma.

关键词： Thymoma Metastasis Intradural lesion Spinal tumor Spinal surgery

Syringomyelia associated with cervical spondylosis: A rare condition

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World Journal of Clinical Cases 2013年第3期1卷 111-115页

作者： Alessandro Landi Lorenzo Nigro Nicola marotta Cristina Mancarella Pasquale Donnarumma Roberto Delfini Division of Neurosurgery Department of Neurology and PsichiatryUniversity of Rome Sapienza00181 RomeItaly

Spinal spondylosis is an extremely common condition that has only rarely been described as a cause of syringomyelia. We describe a case of syringomyelia associated with cervical spondylosis admitted at our division and treated by our institute. It is the case of a 66-yearold woman. At our observation she was affected by moderate-severe spastic tetraparesis. T2-weighted magnetic resonance imaging(MRI) showed an hyperintense signal within spinal cord from C3 to T1 with a more sharply defined process in the inferior cervical spinal cord. At the same level bulging discs, facets and ligamenta flava hypertrophy determined a compression towards subarachnoid space and spinal cord. Spinal cord compression was more evident in hyperextension rather than flexion. A 4-level laminectomy and subsequent posterior stabilization with intra-articular screws was executed. At 3-mo follow up there was a regression of tetraparesis but motor deficits of the lower limbs residuated. At the same follow up postoperative MRI was executed. It suggested enlargement of the syrinx. Perhaps hyperintensity within spinal cord appeared "bounded" from C3 to C7 with clearer margins. At the level of surgical decompression, subarachnoid space and spinal cord enlargement were also evident. A review of the literature was executed using Pub Med database. The objective of the research was to find an etiopathological theory able to relate syringomyelia with cervical spondylosis. Only 6 articles have been found. At the origin of syringomyelia the mechanisms of compression and instability are proposed. Perhaps other studies assert the importance of subarachnoid space regard cerebrospinal fluid(CSF) dynamic. We postulate that cervical spine instability may be the cause of multiple microtrauma towards spinal cord and consequently may damage spinal cord parenchyma generating myelomalacia and consequently syrinx. Otherwise the hemorrhage within spinal cord central canal can cause an obstruction of CSF outflow, finall

关键词： Syringomyelia Cervical spondylosis Syringomyelia surgery Syringomyelia etiology Syringomyelia physiopathology

360° fusion for realignment of high grade cervical kyphosis by one step surgery: Case report

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World Journal of Clinical Cases 2014年第7期2卷 289-292页

作者： Alessandro Landi Nicola marotta Cristina Mancarella Demo Eugenio Dugoni Roberto Tarantino Roberto Delfini Department of Neurology and Psychiatry Division of NeurosurgeryUniversity of RomeSapienza00100 RomeItaly

Surgical treatment for cervical kyphotic deformity is still controversial. Circumferential approach has been well described in the literature but long terms outcomes are not well reported. Important to decide the correct treatment option is the preoperative radiological exams to value the type of deformity(flexible or fixed). We report the case of a 67-year-old woman affected by a severe cervical kyphotic deformity who underwent combined anterior/posterior surgical approach, getting a good reduction of the deformity and an optimal stability in a long term follow up.

关键词： Cervical deformity High grade kyphosis Circumferential fusion Surgical technique Degenerative cervical spine

Four-dimensional interplay between tectonic and seismic deformations: orthotropic anisotropy and two-modal relaxation

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Four-dimensional interplay between tectonic and seismic defo...

中国地球物理学会第二十九届年会

作者： G. Cambiotti S. Rigamonti R. Splendore A. M. marotta R. Sabadini Department of Earth Sciences University of Milan

＜正＞Power-law Maxwell rheologies are responsible for a four-dimensional interplay between tectonic and post-seismic deformations due to earthquake-induced viscosity changes which, in turn, yield a disequilibrium between tectonic stress and strain rate. This interplay holds whenever seismic stress is comparable or smaller than tectonic stress. In fact, even if earthquake-induced viscosity changes are small compared to the

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德北盆地区域应力场的起源：数值模拟结果

地壳构造与地壳应力 2003年第3期 21-33页

作者： A．M．marotta 陈连旺王文清意大利米兰大学地球科学系不详

东北德盆地是南部二叠纪盆地的一部分，它从北海穿过德国北部扩展而来(图1a)，东北德盆地位于加里东变形构造前缘的南面，往南扩展到哈尔茨山脉北面的易北河断裂系。盆地经历了复杂的多期构造进程，可以总结为三个主要阶段。盆地形成于... 详细信息

东北德盆地是南部二叠纪盆地的一部分，它从北海穿过德国北部扩展而来(图1a)，东北德盆地位于加里东变形构造前缘的南面，往南扩展到哈尔茨山脉北面的易北河断裂系。盆地经历了复杂的多期构造进程，可以总结为三个主要阶段。盆地形成于上石炭纪且伴随有大规模的火山事件。

关键词：德北盆地区域应力场数值模拟盆地形成粘性薄板模型应力场速度场应变场主应力方向

Spatial Interpolation Applied a Crustal Thickness in Brazil

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Journal of Geographic Information System 2012年第2期4卷 142-152页

作者： Cesar Garcia Pavao George Sand Franca Giuliano S.marotta Paulo Henrique B.J.Menezes Gervasio Barbosa S.Neto Henrique Llacer Roig Seismological Observatory University of BrasiliaBrasiliaBrazil Laboratory of Remote Sensing and Spatial Analysis University of BrasiliaBrasiliaBrazil

The use of spatial interpolation methods of data is becoming increasingly common in geophysical analysis, for that reason, currently, several software already contain many of these methods, allowing more detailed studies. In the present work four interpolation methods are evaluated, for the crustal thickness data of Brazil tectonic provinces, with the intention of making Moho’s map of the regions. The methods used were IDW, Natural Neighbor, Spline and Kriging. We compiled 257 data that constituted a geographic database implemented in the template Postgree PostGIS and were processed using the tools of interpolation located in the Spatyal Analyst Tools program ArcGIS?9 ESRI. Traditional methods, IDW, Natural Neighbor and Spline, generate artifacts in their results, the effects of aim, not consistent with the behavior of crust. Such anomalies are generated because of mathematical formulation methods added to data compiled gravimetry. The analysis results of geostatistical Kriging are more refined and consistent, showing no specific anormalities, i.e., the crustal thickness variation (thinning and thickening) is introduced gradually. Initial our estimates were separated in four specific blocks. With the approval of new networks (BRASIS, RSISNE and RSIS), the crustal thickness database for Brazil may be amended or supplemented so that new models may be generated more consistently, complementing studies of regional tectonics evolution and seismicity.

关键词： Spatial Interpolation Crustal Thickness Tectonic Provinces of Brazil