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https://www.readbyqxmd.com/read/29753579/a-reappraisal-of-pain-paired-associative-stimulation-suggesting-motor-inhibition-at-spinal-level
#1
Martine Gavaret, Samar S Ayache, Veit Mylius, Alaa Mhalla, Moussa A Chalah, Jean-Pascal Lefaucheur
OBJECTIVES: Paired associative stimulation (PAS) can modulate motor excitability and consists of delivering repeated pairs of peripheral sensory stimulation combined with transcranial magnetic stimulation (TMS) over the contralateral motor cortex. Our objective was to evaluate the effect of a PAS protocol using a painful stimulation. METHODS: Ten healthy volunteers underwent pain-PAS protocol consisting of 90 pairs of nociceptive stimulus over the right hand followed by an image-guided navigated TMS of the contralateral motor cortex, delivered at 0...
May 9, 2018: Neurophysiologie Clinique, Clinical Neurophysiology
https://www.readbyqxmd.com/read/29730457/anterior-posterior-length-discrepancy-of-the-spinal-column-in-adolescent-idiopathic-scoliosis-a-3d-ct-study
#2
Rob C Brink, Tom P C Schlösser, Marijn van Stralen, Koen L Vincken, Moyo C Kruyt, Steve C N Hui, Max A Viergever, Winnie C W Chu, Jack C Y Cheng, René M Castelein
BACKGROUND CONTEXT: One of the characteristics of reported observations in adolescent idiopathic scoliosis (AIS) is that the thoracic spine is longer anteriorly than posteriorly, more pronounced around the apex than the transitional zones. This reversal of the normal kyphotic anatomy of the thoracic spine is related to questions of etiopathogenesis of AIS. The changes in the anatomy of the anterior column have been described rather in detail, however, the role of the posterior spinal column and the laminae has so far not been elucidated...
May 3, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29707559/highlights-from-the-first-annual-spinal-navigation-emerging-technologies-and-systems-integration-meeting
#3
Doniel Drazin, Peter Grunert, Roger Hartl, David Polly, Bernhard Meyer, Ken Catchpole, Ilya Laufer, Rajiv Sethi, Tiffany Perry, David Simon, Michael Wang, Charles Fisher, Marissa Scribner, Genevieve White, R Shane Tubbs, Rod J Oskouian, Terrence Kim, J Patrick Johnson
This paper provides a detailed report of the "First Annual Spinal Navigation, Emerging Technologies and Systems Integration" meeting held December 3, 2016 at the Seattle Science Foundation.
March 2018: Annals of Translational Medicine
https://www.readbyqxmd.com/read/29706191/multi-criteria-optimization-achieves-superior-normal-tissue-sparing-in-intensity-modulated-radiation-therapy-for-oropharyngeal-cancer-patients
#4
Jianghong Xiao, Yan Li, Huashan Shi, Tangel Chang, Yong Luo, Xuetao Wang, Yang He, Nianyong Chen
OBJECTIVES: To evaluate the benefit of intensity-modulated radiation therapy (IMRT) with multi-criteria optimization (MCO) in patients with oropharyngeal cancer (OPC) and compare the dose difference between the MCO plans navigated by physicians and dosimetrists. MATERIALS AND METHODS: The conventional IMRT plans (nonMCO) and MCO IMRT plans navigated by physicians and dosimetrists (MCOp and MCOd) were created for 30patients with OPC. All the plans were reviewed, and the planning time and dose-volume parameters were compared...
May 2018: Oral Oncology
https://www.readbyqxmd.com/read/29698581/segmental-analysis-of-the-vestibular-nerve-and-the-efferents-of-the-vestibular-complex
#5
Carmen Díaz, Luis Puelles
Use of a segmental approach in the study of vestibular centers in the hindbrain improves morphological and functional understanding of this region controlled by Hox genes, among other molecular determinants. Here we review accrued data about segmental organization of vestibular afferents and efferents. Inner ear-originated vestibular fibers enter the hindbrain, together with auditory ones, through the alar plate of rhombomere 4, then branch into descending and ascending branches to reach appropriate vestibular nuclei along the vestibular column...
April 26, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29689003/comparison-of-the-clinical-accuracy-between-point-to-point-registration-and-auto-registration-using-an-active-infrared-navigation-system
#6
Jingwei Zhao, Yajun Liu, Mingxing Fan, Bo Liu, Da He, Wei Tian
STUDY DESIGN: A model experiment. OBJECTIVE: To measure and compare the clinical accuracy of point-to-point registration (PR) and auto-registration (AR) in an operative set using an active infrared navigation system. SUMMARY OF BACKGROUND DATA: PR and AR are two major registration methods of navigation assisted spinal surgery. No previous study compared the difference between the two methods with respect to clinical accuracy. METHODS: A novel method was used to measure the clinical accuracy of the navigation system under an operative set using a Sawbone model with titanium beads on the surface, which was essential to measure the accuracy numerically, instead of a real patient...
April 23, 2018: Spine
https://www.readbyqxmd.com/read/29673199/thoracic-lumbar-and-sacral-pedicle-screw-placement-using-stryker-ziehm-virtual-screw-technology-and-navigated-stryker-cordless-driver-3-technical-note
#7
Praveen Satarasinghe, Kojo D Hamilton, Michael J Tarver, Robert J Buchanan, Michael T Koltz
OBJECT: Utilization of pedicle screws (PS) for spine stabilization is common in spinal surgery. With reliance on visual inspection of anatomical landmarks prior to screw placement, the free-hand technique requires a high level of surgeon skill and precision. Three-dimensional (3D), computer-assisted virtual neuronavigation improves the precision of PS placement and minimization steps. METHODS: Twenty-three patients with degenerative, traumatic, or neoplastic pathologies received treatment via a novel three-step PS technique that utilizes a navigated power driver in combination with virtual screw technology...
April 17, 2018: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/29667139/spinal-navigation-for-minimally-invasive-thoracic-and-lumbosacral-spine-fixation-implications-for-radiation-exposure-operative-time-and-accuracy-of-pedicle-screw-placement
#8
T Tajsic, K Patel, R Farmer, R J Mannion, R A Trivedi
PURPOSE: Navigation is emerging as a useful adjunct in percutaneous, minimally invasive spinal surgery (MIS). The aim of this study was to compare C-Arm navigated, O-Arm navigated and conventional 2D-fluoroscopy assisted MIS thoracic and lumbosacral spine fixation techniques in terms of operating time, radiation exposure and accuracy of pedicle screw (PS) placement. METHODS: Retrospective observational study of 152 consecutive adults who underwent MIS fixations for spinal instability: 96 2D-fluoroscopy assisted, 39 3D-C-Arm navigated and 27 using O-Arm navigated...
April 17, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29666181/accuracy-of-image-guided-percutaneous-injection-into-a-phantom-spinal-cord-utilizing-flat-panel-detector-ct-with-mr-fusion-and-integrated-navigational-software
#9
Jason F Talbott, Daniel L Cooke, Marc C Mabray, Paul S Larson, Matthew R Amans, Steven W Hetts, Mark W Wilson, Terilyn Moore, Ernesto A Salegio
PURPOSE: To evaluate the accuracy of percutaneous fluoroscopic injection into the spinal cord of a spine phantom utilizing integrated navigational guidance from fused flat panel detector CT (FDCT) and MR datasets. Conventional and convection-enhanced delivery (CED) techniques were evaluated. MATERIALS AND METHODS: FDCT and MR datasets of a swine thoracic spine phantom were co-registered using an integrated guidance system and surface to spinal cord target trajectory planning was performed on the fused images...
April 17, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29663038/-relevance-of-spinal-navigation-in-reconstructive-surgery-of-the-cervical-spine
#10
REVIEW
R Kothe, M Richter
BACKGROUND: Spinal navigation has made significant advances in the last two decades. After initial experiences with pedicle screws in the thoracic and lumbar spine, technological improvements have resulted in their increased application in the cervical spine. Instrumentation techniques like cervical pedicle screws, lateral mass screws in C1 and transarticular screws C1/C2 have become standard due to the application of image guidance. TECHNIQUE: Different navigation techniques can be distinguished based on the type of imaging...
April 16, 2018: Der Orthopäde
https://www.readbyqxmd.com/read/29626517/eiris-eigen-analysis-approach-for-improved-spine-multi-shot-diffusion-mri
#11
Li Guo, Feng Huang, Zhongbiao Xu, Yingjie Mei, Wenxing Fang, Xiaodong Ma, Erpeng Dai, Hua Guo, Qianjin Feng, Wufan Chen, Yanqiu Feng
Image reconstruction using image-space sampling function (IRIS) corrects motion-induced inter-shot phase variations using phase maps from navigator-echo for multi-shot diffusion MRI. However, the bandwidth along the phase-encoding direction of navigator-echo is usually lower than that of image-echo, and thus their geometric distortions may be different. This geometric mismatch is corrected in IRIS by using the B0 map from an additional scan. In this paper, we present an enhanced IRIS (eIRIS) method that remove the requirement of B0 map...
April 4, 2018: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29584718/rapid-evolution-of-a-voltage-gated-sodium-channel-gene-in-a-lineage-of-electric-fish-leads-to-a-persistent-sodium-current
#12
Ammon Thompson, Daniel T Infield, Adam R Smith, G Troy Smith, Christopher A Ahern, Harold H Zakon
Most weakly electric fish navigate and communicate by sensing electric signals generated by their muscle-derived electric organs. Adults of one lineage (Apteronotidae), which discharge their electric organs in excess of 1 kHz, instead have an electric organ derived from the axons of specialized spinal neurons (electromotorneurons [EMNs]). EMNs fire spontaneously and are the fastest-firing neurons known. This biophysically extreme phenotype depends upon a persistent sodium current, the molecular underpinnings of which remain unknown...
March 2018: PLoS Biology
https://www.readbyqxmd.com/read/29570390/laser-interstitial-thermal-therapy-of-the-spine-technical-aspects
#13
Nelson Moussazadeh, Linton T Evans, Roxana Grasu, Laurence D Rhines, Claudio E Tatsui
Spinal laser interstitial thermal therapy has been developed as a minimally invasive modality to treat epidural spinal tumors percutaneously. The safe and effective use of this technology requires meticulous preoperative trajectory planning and an intraoperative workflow incorporating navigation and MR thermography. Instrumented stabilization can be performed during the same operation if needed. Operative considerations and technical aspects are reviewed. The video can be found here: https://youtu.be/P--frsag6gU ...
April 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29563075/participatory-design-of-an-online-self-management-tool-for-users-with-spinal-cord-injury-qualitative-study
#14
Sonya Allin, John Shepherd, Jennifer Tomasone, Sarah Munce, Gary Linassi, Saima Noreen Hossain, Susan Jaglal
BACKGROUND: Rehospitalization rates resulting from secondary conditions in persons with spinal cord injuries (SCI) are high. Self-management programs for many chronic conditions have been associated with decreases in hospital readmissions. However, in the SCI community, evidence suggests that satisfaction with traditional self-management programs is low. Users with SCI have indicated preference for programs that are online (rather than in-person), that target SCI-specific concerns, and are led by peers with SCI...
March 21, 2018: JMIR Rehabilitation and Assistive Technologies
https://www.readbyqxmd.com/read/29555396/novel-vertebral-artery-flow-reversal-method-for-preventing-ischemic-complication-during-endovascular-intervention
#15
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
https://www.readbyqxmd.com/read/29550596/gunshot-spinal-injury-factors-navigating-treatment-and-outcome
#16
Noorulain Iqbal, Salman Sharif, Mehak Hafiz, Aman Ullah
No abstract text is available yet for this article.
March 14, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29549400/improved-accuracy-of-screw-implantation-could-decrease-the-incidence-of-post-operative-hydrothorax-o-arm-navigation-vs-free-hand-in-thoracic-spinal-deformity-correction-surgery
#17
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
https://www.readbyqxmd.com/read/29473011/use-of-3d-navigation-in-subaxial-cervical-spine-lateral-mass-screw-insertion
#18
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
https://www.readbyqxmd.com/read/29439378/the-experience-of-seeking-gaining-and-maintaining-employment-after-traumatic-spinal-cord-injury-and-the-vocational-pathways-involved
#19
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
https://www.readbyqxmd.com/read/29432262/increased-radiation-but-no-benefits-in-pedicle-screw-accuracy-with-navigation-versus-a-freehand-technique-in-scoliosis-surgery
#20
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...
May 2018: Clinical Orthopaedics and related Research
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