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spinal navigation

Tomotaka Ohshima, Shigeru Miyachi, Naoki Matsuo, Reo Kawaguchi, Aichi Niwa, Ryuya Maejima, Taiki Isaji, Masakazu Takayasu
BACKGROUND AND PURPOSE: We report a secure endovascular approach for the treatment of vascular lesions of the posterior circulation. Even if a large profile guide catheter is wedged in the unilateral vertebral artery (VA), our VA flow reversal method can prevent ischemic complications, including the spinal cord infarction. CASE PRESENTATION: The patient was a 64-year-old woman who had been followed up for arteriovenous malformation (AVM) and an unruptured aneurysm of the basilar artery-superior cerebellar artery bifurcation...
March 16, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
Noorulain Iqbal, Salman Sharif, Mehak Hafiz, Aman Ullah
No abstract text is available yet for this article.
March 14, 2018: World Neurosurgery
Zhihui Zhao, Zhen Liu, Zongshan Hu, Changchun Tseng, Jie Li, Wei Pan, Yong Qiu, Zezhang Zhu
PURPOSE: The purpose of this study was to analyze the occurrence of PE after intra-operative O-arm navigation-assisted surgery and determine whether the post-operative PE incidence could be decreased by using O-arm navigation as compared to conventional free-hand technique. METHODS: A cohort of 27 patients with spinal deformity who were operated upon with an O-arm navigated system (group A) between 2013 and 2016 were enrolled in the study. A total of 27 curve-matched patients treated by conventional free-hand technique were included as the control group (group B)...
March 16, 2018: International Orthopaedics
Abdullah Arab, Fahad Alkherayf, Adam Sachs, Eugene K Wai
Objective  Cervical spine can be stabilized by different techniques. One of the common techniques used is the lateral mass screws (LMSs), which can be inserted either by freehand techniques or three-dimensional (3D) navigation system. The purpose of this study is to evaluate the difference between the 3D navigation system and the freehand technique for cervical spine LMS placement in terms of complications. Including intraoperative complications (vertebral artery injury [VAI], nerve root injury [NRI], spinal cord injury [SCI], lateral mass fracture [LMF]) and postoperative complications (screw malposition, screw complications)...
January 2018: Journal of Neurological Surgery Reports
Gillean Hilton, Carolyn A Unsworth, Ruth Stuckey, Gregory C Murphy
BACKGROUND: Vocational potential in people with spinal cord injury (SCI) are unrealised with rates of employment substantially lower than in the labour force participation of the general population and the pre-injury employment rates. OBJECTIVES: To understand the experience and pathway of people achieving employment outcome after traumatic spinal cord injury by; classifying participants into employment outcome groups of stable, unstable and without employment; identifying pre and post-injury pathways for participants in each group and, exploring the experiences of people of seeking, gaining and maintaining employment...
2018: Work: a Journal of Prevention, Assessment, and Rehabilitation
Wiktor Urbanski, Wojciech Jurasz, Michal Wolanczyk, Miroslaw Kulej, Piotr Morasiewicz, Szymon Lukasz Dragan, Rafal Zaluski, Grzegorz Miekisiak, Szymon Feliks Dragan
BACKGROUND: The clinical value of pedicle screws in spinal deformity surgery is well known; however, screw insertion is demanding and sometimes associated with complications. Navigation systems based on intraoperatively obtained three-dimensional (3-D) images were developed to minimize pedicle screw misplacements. However, there is a lack of data confirming superiority of navigation above other techniques. There are also concerns regarding increased radiation used during the procedure...
February 8, 2018: Clinical Orthopaedics and related Research
Guy Vernon Morris, Jonathan D Stevenson, Scott Evans, Michael C Parry, Lee Jeys
Navigation in surgery has increasingly become more commonplace. The use of this technological advancement has enabled ever more complex and detailed surgery to be performed to the benefit of surgeons and patients alike. This is particularly so when applying the use of navigation within the field of orthopedic oncology. The developments in computer processing power coupled with the improvements in scanning technologies have permitted the incorporation of navigational procedures into day-to-day practice. A comprehensive search of PubMed using the search terms "navigation", "orthopaedic" and "oncology" yielded 97 results...
January 2018: Indian Journal of Orthopaedics
Takahiro Ushijima, Kenichi Kawaguchi, Tadashi Matsumoto, Masaki Takagi, Tatsuro Kondoh, Gen Nishimura, Aritoshi Iida, Shiro Ikegawa, Nobuhiko Haga, Go Kato
BACKGROUND: Patients with ankylosing spines are susceptible to developing spinal fractures even with minor trauma and can develop early or late neurological injuries. These fractures require early and aggressive surgical management to enable spinal stability and/or neural decompression. Being highly unstable by nature, they require relatively long segment instrumentation and fusion, which can increase paravertebral soft tissue damage and perioperative bleeding. The purpose of this report is to describe a rare case of traumatic double fractures at the cervico-thoracic and thoraco-lumbar transition zones in ankylosing spine with spondylo-epiphyseal dysplasia (SED) of unknown cause, which were successfully treated with a combined open and percutaneous spinal fusion procedure...
February 7, 2018: BMC Research Notes
Kazuyoshi Kobayashi, Kei Ando, Kenyu Ito, Mikito Tsushima, Masayoshi Morozumi, Satoshi Tanaka, Masaaki Machino, Kyotaro Ota, Naoki Ishiguro, Shiro Imagama
PURPOSE: The O-arm® navigation system allows intraoperative CT imaging that can facilitate highly accurate instrumentation surgery, but radiation exposure is higher than with X-ray radiography. This is a particular concern in pediatric surgery. The purpose of this study is to examine intraoperative radiation exposure in pediatric spinal scoliosis surgery using O-arm. METHODS: The subjects were 38 consecutive patients (mean age 12.9 years, range 10-17) with scoliosis who underwent spinal surgery with posterior instrumentation using O-arm...
February 2, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
Christopher J Kleck, Christopher Johnson, Michelle Akiyama, Evalina L Burger, Christopher J Cain, Vikas V Patel
STUDY DESIGN: Description of a navigated, single-step, minimally invasive technique for the placement of pedicle screws. OBJECTIVE: To describe a new technique for minimally invasive placement of pedicle screws in the lumbar spine using O-arm and StealthStation navigation in combination. SUMMARY OF BACKGROUND DATA: Minimally invasive surgical techniques are described in the literature as safe and effective methods for pedicle screw instrumentation...
January 31, 2018: Clinical Spine Surgery
Tian-Jian Liu, Fang Shen, Chao Zhang, Pin-Tong Huang, Yong-Jian Zhu
BACKGROUND: Standard fluoroscopic guidance (C-arm fluoroscopy) has been routinely used for intraoperative localization of spinal level for surgical removal of intraspinal tumour, while it is not suitable for selected patients, e.g. pregnant women, who need to avoid radiation exposure. Fusion imaging of real-time ultrasound (US) and magnetic resonance imaging (MRI) is a radiation-free technique which has been reported to have good localization accuracy in managing several conditions. CLINICAL PRESENTATION: A 37-year-old pregnant patient, presented with a progressively aggravating lower back pain for 20 days and was incapable of lying supine with lower extremities swelling for 1 week, was referred to our hospital in her 18th week of gestation...
January 30, 2018: European Spine Journal
S Rajasekaran, Manindra Bhushan, Siddharth Aiyer, Rishi Kanna, Ajoy Prasad Shetty
PURPOSE: To develop a classification based on the technical complexity encountered during pedicle screw insertion and to evaluate the performance of AIRO® CT navigation system based on this classification, in the clinical scenario of complex spinal deformity. MATERIALS AND METHODS: 31 complex spinal deformity correction surgeries were prospectively analyzed for performance of AIRO® mobile CT-based navigation system. Pedicles were classified according to complexity of insertion into five types...
January 9, 2018: European Spine Journal
Juan Delgado-Fernández, Paloma Pulido, María Ángeles García-Pallero, Guillermo Blasco, Natalia Frade-Porto, Rafael G Sola
OBJECTIVE Spondylolisthesis is a prevalent spine disease that recent studies estimate could be detected in 9% of the population. High-grade spondylolisthesis (HGS), however, is much less frequent, which makes it difficult to develop a general recommendation for its treatment. Posterior transdiscal fixation was proposed in 1994 for HGS, and the use of spine navigation could make this technique more accessible and reduce the morbidity associated with the procedure. The purpose of this study was to present a case series involving adult patients with HGS and correct spinal alignment who were treated with transdiscal pedicle screw placement guided with neuronavigation and compare the results to those achieved previously without image guidance...
January 2018: Neurosurgical Focus
Hugo Ducuing, Thibault Gardette, Aurora Pignata, Servane Tauszig-Delamasure, Valérie Castellani
The navigation of commissural axons in the developing spinal cord has attracted multiple studies over the years. Many important concepts emerged from these studies which have enlighten the general mechanisms of axon guidance. The navigation of commissural axons is regulated by a series of cellular territories which provides the diverse guidance information necessary to ensure the successive steps of their pathfinding towards, across, and away from the ventral midline. In this review, we discuss how repulsive forces, by propelling, channelling, and confining commissural axon navigation, bring key contributions to the formation of this neuronal projection...
December 22, 2017: Seminars in Cell & Developmental Biology
Philippe Saltiel, Andrea d'Avella, Matthew C Tresch, Kuno Wyler, Emilio Bizzi
The central pattern generator (CPG) architecture for rhythm generation remains partly elusive. We compare cat and frog locomotion results, where the component unrelated to pattern formation appears as a temporal grid, and traveling wave respectively. Frog spinal cord microstimulation with N-methyl-D-Aspartate (NMDA), a CPG activator, produced a limited set of force directions, sometimes tonic, but more often alternating between directions similar to the tonic forces. The tonic forces were topographically organized, and sites evoking rhythms with different force subsets were located close to the constituent tonic force regions...
2017: Frontiers in Neural Circuits
Zhe Chen
Topographic arrangement of neuronal cell bodies and axonal tracts are crucial for proper wiring of the nervous system. This involves often-coordinated neuronal migration and axon guidance during development. Most neurons migrate from their birthplace to specific topographic coordinates as they adopt the final cell fates and extend axons. The axons follow temporospatial specific guidance cues to reach the appropriate targets. When neuronal or axonal migration or their coordination is disrupted, severe consequences including neurodevelopmental disorders and neurological diseases, can arise...
December 20, 2017: Seminars in Cell & Developmental Biology
Yong Fan, Jinpeng Du, Jianan Zhang, Shichang Liu, Xukai Xue, Yunfei Huang, Jing Zhang, Dingjun Hao
BACKGROUND As an available new tool for spinal surgery, robotic technology holds great potential and has been demonstrated to have better clinical outcomes compared with traditional techniques. However, it has not been compared with other assisted tools for the treatment of lumbar degenerative disease. This article focused on studying such variances. MATERIAL AND METHODS A total of 176 pedicle screws were inserted in 39 patients using a spine robot (group 1), 134 screws were implanted in 28 patients using navigational template (group 2), 234 screws were implanted in 51 patients by O-arm-based navigation (group 3), and 346 screws were implanted in 72 patients by fluoroscopy-guided assistance (group 4)...
December 16, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Ayhan Comert, İhsan Dogan, Y Sukru Çaglar
AIM: The aim of this study is to use a smartphone application during pedicle screw placement navigation and examine the accuracy of this application on anatomical dry vertebrae model. MATERIAL AND METHODS: 76 dry vertebrae were used for this study and pedicle entry points, projections of pedicle screw trajectory lines in lateral and superior aspect of vertebral body were identified and drawn for each vertebra bilaterally. In each position, all angulations were measured directly before the procedure manually...
November 1, 2017: Turkish Neurosurgery
Susan L Ryerson Espino, Erin H Kelly, Anne Rivelli, Kathy Zebracki, Lawrence C Vogel
STUDY DESIGN: Focus group study. OBJECTIVES: Explore unmet needs and support preferences of caregivers of youth with spinal cord injury (SCI). SETTING: One pediatric specialty rehabilitation hospital system in the United States. METHODS: Four focus groups were conducted with a convenience sample of 26 caregivers who were primarily mothers (96%) and married (65%), and had at least some college education (85%). Children living with SCI were on average 12...
November 30, 2017: Spinal Cord
Javier Quillo-Olvera, Guang-Xun Lin, Tsz-King Suen, Hyun-Jin Jo, Jin-Sung Kim
Cervical spondylotic myelopathy (CSM) is the most common degenerative disease of the spine in elderly patients. Although there are several surgical options for the treatment of this disease, minimally invasive techniques for localized decompression of the true clinical generator of the patient's disease has revolutionized spinal surgery recently. This article presents an alternate application of the anterior transcorporeal tunnel approach in combination with computed tomography (CT)-based intraoperative navigation in the treatment of patients with cervical myelopathy secondary to spondylosis...
February 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
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