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Neurosurgical Focus

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https://www.readbyqxmd.com/read/28463624/evaluation-of-robot-guided-minimally-invasive-implantation-of-2067-pedicle-screws
#1
Naureen Keric, Christian Doenitz, Amer Haj, Izabela Rachwal-Czyzewicz, Mirjam Renovanz, Dominik M A Wesp, Stephan Boor, Jens Conrad, Alexander Brawanski, Alf Giese, Sven R Kantelhardt
Objective Recent studies have investigated the role of spinal image guidance for pedicle screw placement. Many authors have observed an elevated placement accuracy and overall improvement of outcome measures. This study assessed a bi-institutional experience following introduction of the Renaissance miniature robot for spinal image guidance in Europe. Methods The medical records and radiographs of all patients who underwent robot-guided implantation of spinal instrumentation using the novel system (between October 2011 and March 2015 in Mainz and February 2014 and February 2016 in Regensburg) were reviewed to determine the efficacy and safety of the newly introduced robotic system...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463623/accuracy-of-robot-guided-versus-freehand-fluoroscopy-assisted-pedicle-screw-insertion-in-thoracolumbar-spinal-surgery
#2
Granit Molliqaj, Bawarjan Schatlo, Awad Alaid, Volodymyr Solomiichuk, Veit Rohde, Karl Schaller, Enrico Tessitore
OBJECTIVE The quest to improve the safety and accuracy and decrease the invasiveness of pedicle screw placement in spine surgery has led to a markedly increased interest in robotic technology. The SpineAssist from Mazor is one of the most widely distributed robotic systems. The aim of this study was to compare the accuracy of robot-guided and conventional freehand fluoroscopy-guided pedicle screw placement in thoracolumbar surgery. METHODS This study is a retrospective series of 169 patients (83 women [49%]) who underwent placement of pedicle screw instrumentation from 2007 to 2015 in 2 reference centers...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463622/initial-experience-with-a-robotically-operated-video-optical-telescopic-microscope-in-cranial-neurosurgery-feasibility-safety-and-clinical-applications
#3
Lior Gonen, Srikant S Chakravarthi, Alejandro Monroy-Sosa, Juanita M Celix, Nathaniel Kojis, Maharaj Singh, Jonathan Jennings, Melanie B Fukui, Richard A Rovin, Amin B Kassam
OBJECTIVE The move toward better, more effective optical visualization in the field of neurosurgery has been a focus of technological innovation. In this study, the authors' objectives are to describe the feasibility and safety of a new robotic optical platform, namely, the robotically operated video optical telescopic-microscope (ROVOT-m), in cranial microsurgical applications. METHODS A prospective database comprising patients who underwent a cranial procedure between April 2015 and September 2016 was queried, and the first 200 patients who met the inclusion criteria were selected as the cohort for a retrospective chart review...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463621/computer-aided-design-computer-aided-manufacturing-skull-base-drill
#4
William T Couldwell, Joel D MacDonald, Charles L Thomas, Bradley C Hansen, Aniruddha Lapalikar, Bharat Thakkar, Alagar K Balaji
The authors have developed a simple device for computer-aided design/computer-aided manufacturing (CAD-CAM) that uses an image-guided system to define a cutting tool path that is shared with a surgical machining system for drilling bone. Information from 2D images (obtained via CT and MRI) is transmitted to a processor that produces a 3D image. The processor generates code defining an optimized cutting tool path, which is sent to a surgical machining system that can drill the desired portion of bone. This tool has applications for bone removal in both cranial and spine neurosurgical approaches...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463620/robotic-versus-fluoroscopy-guided-pedicle-screw-insertion-for-metastatic-spinal-disease-a-matched-cohort-comparison
#5
Volodymyr Solomiichuk, Julius Fleischhammer, Granit Molliqaj, Jwad Warda, Awad Alaid, Kajetan von Eckardstein, Karl Schaller, Enrico Tessitore, Veit Rohde, Bawarjan Schatlo
OBJECTIVE Robot-guided pedicle screw placement is an established technique for the placement of pedicle screws. However, most studies have focused on degenerative disease. In this paper, the authors focus on metastatic spinal disease, which is associated with osteolysis. The associated lack of dense bone may potentially affect the automatic recognition accuracy of radiography-based surgical assistance systems. The aim of the present study is to compare the accuracy of the SpineAssist robot system with conventional fluoroscopy-guided pedicle screw placement for thoracolumbar metastatic spinal disease...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463619/letter-to-the-editor-stereotactic-laser-ablation-for-hypothalamic-hamartomas-after-srs-failure
#6
Nicholas J Brandmeir, Michael D Sather
No abstract text is available yet for this article.
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463618/current-applications-of-robotics-in-spine-surgery-a-systematic-review-of-the-literature
#7
Jacob R Joseph, Brandon W Smith, Xilin Liu, Paul Park
OBJECTIVE Surgical robotics has demonstrated utility across the spectrum of surgery. Robotics in spine surgery, however, remains in its infancy. Here, the authors systematically review the evidence behind robotic applications in spinal instrumentation. METHODS This systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. Relevant studies (through October 2016) that reported the use of robotics in spinal instrumentation were identified from a search of the PubMed database...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463617/robot-assisted-procedures-in-pediatric-neurosurgery
#8
Alessandro De Benedictis, Andrea Trezza, Andrea Carai, Elisabetta Genovese, Emidio Procaccini, Raffaella Messina, Franco Randi, Silvia Cossu, Giacomo Esposito, Paolo Palma, Paolina Amante, Michele Rizzi, Carlo Efisio Marras
OBJECTIVE During the last 3 decades, robotic technology has rapidly spread across several surgical fields due to the continuous evolution of its versatility, stability, dexterity, and haptic properties. Neurosurgery pioneered the development of robotics, with the aim of improving the quality of several procedures requiring a high degree of accuracy and safety. Moreover, robot-guided approaches are of special interest in pediatric patients, who often have altered anatomy and challenging relationships between the diseased and eloquent structures...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463616/intelligent-control-of-neurosurgical-robot-mm-3-using-dynamic-motion-scaling
#9
Sunho Ko, Atsushi Nakazawa, Yusuke Kurose, Kanako Harada, Mamoru Mitsuishi, Shigeo Sora, Naoyuki Shono, Hirofumi Nakatomi, Nobuhito Saito, Akio Morita
OBJECTIVE Advanced and intelligent robotic control is necessary for neurosurgical robots, which require great accuracy and precision. In this article, the authors propose methods for dynamically and automatically controlling the motion-scaling ratio of a master-slave neurosurgical robotic system to reduce the task completion time. METHODS Three dynamic motion-scaling modes were proposed and compared with the conventional fixed motion-scaling mode. These 3 modes were defined as follows: 1) the distance between a target point and the tip of the slave manipulator, 2) the distance between the tips of the slave manipulators, and 3) the velocity of the master manipulator...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463615/a-new-tool-for-touch-free-patient-registration-for-robot-assisted-intracranial-surgery-application-accuracy-from-a-phantom-study-and-a-retrospective-surgical-series
#10
Francesco Cardinale, Michele Rizzi, Piergiorgio d'Orio, Giuseppe Casaceli, Gabriele Arnulfo, Massimo Narizzano, Davide Scorza, Elena De Momi, Michele Nichelatti, Daniela Redaelli, Maurizio Sberna, Alessio Moscato, Laura Castana
OBJECTIVE The purpose of this study was to compare the accuracy of Neurolocate frameless registration system and frame-based registration for robotic stereoelectroencephalography (SEEG). METHODS The authors performed a 40-trajectory phantom laboratory study and a 127-trajectory retrospective analysis of a surgical series. The laboratory study was aimed at testing the noninferiority of the Neurolocate system. The analysis of the surgical series compared Neurolocate-based SEEG implantations with a frame-based historical control group...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463614/endoscopic-endonasal-transsphenoidal-surgery-using-the-iarms-operation-support-robot-initial-experience-in-43-patients
#11
Toshihiro Ogiwara, Tetsuya Goto, Alhusain Nagm, Kazuhiro Hongo
Objective The intelligent arm-support system, iArmS, which follows the surgeon's arm and automatically fixes it at an adequate position, was developed as an operation support robot. iArmS was designed to support the surgeon's forearm to prevent hand trembling and to alleviate fatigue during surgery with a microscope. In this study, the authors report on application of this robotic device to endoscopic endonasal transsphenoidal surgery (ETSS) and evaluate their initial experiences. Methods The study population consisted of 43 patients: 29 with pituitary adenoma, 3 with meningioma, 3 with Rathke's cleft cyst, 2 with craniopharyngioma, 2 with chordoma, and 4 with other conditions...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463613/against-the-odds-what-to-expect-in-rehabilitation-of-chronic-spinal-cord-injury-with-a-neurologically-controlled-hybrid-assistive-limb-exoskeleton-a-subgroup-analysis-of-55-patients-according-to-age-and-lesion-level
#12
Dennis Grasmücke, Amrei Zieriacks, Oliver Jansen, Christian Fisahn, Matthias Sczesny-Kaiser, Martin Wessling, Renate C Meindl, Thomas A Schildhauer, Mirko Aach
Objective Age and lesion level are believed to represent outcome predictors in rehabilitation of patients with chronic spinal cord injury (SCI). The Hybrid Assistive Limb (HAL) exoskeleton enables patients to perform a voluntary controlled gait pattern via an electromyography-triggered neuromuscular feedback system, and has been introduced as a temporary gait training tool in patients with SCI. The aim of this prospective pre- and postintervention study was to examine functional outcomes as a function of age and lesion level in patients with chronic incomplete SCI (iSCI) or chronic complete SCI (cSCI) with zones of partial preservation (ZPP) by using the HAL as a temporary training tool...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463612/augmented-reality-integrated-robotics-in-neurosurgery-are-we-there-yet
#13
Karthik Madhavan, John Paul G Kolcun, Lee Onn Chieng, Michael Y Wang
Surgical robots have captured the interest-if not the widespread acceptance-of spinal neurosurgeons. But successful innovation, scientific or commercial, requires the majority to adopt a new practice. "Faster, better, cheaper" products should in theory conquer the market, but often fail. The psychology of change is complex, and the "follow the leader" mentality, common in the field today, lends little trust to the process of disseminating new technology. Beyond product quality, timing has proven to be a key factor in the inception, design, and execution of new technologies...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463611/erratum-application-of-emerging-technologies-to-improve-access-to-ischemic-stroke-care
#14
Andrew J Ringer
No abstract text is available yet for this article.
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463610/revisions-for-screw-malposition-and-clinical-outcomes-after-robot-guided-lumbar-fusion-for-spondylolisthesis
#15
Marc L Schröder, Victor E Staartjes
OBJECTIVE The accuracy of robot-guided pedicle screw placement has been proven to be high, but little is known about the impact of such guidance on clinical outcomes such as the rate of revision surgeries for screw malposition. In addition, there are very few data about the impact of robot-guided fusion on patient-reported outcomes (PROs). Thus, the clinical benefit for the patient is unclear. In this study, the authors analyzed revision rates for screw malposition and changes in PROs following minimally invasive robot-guided pedicle screw fixation...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463609/initial-academic-experience-and-learning-curve-with-robotic-spine-instrumentation
#16
Timur M Urakov, Ken Hsuan-Kan Chang, S Shelby Burks, Michael Y Wang
OBJECTIVE Spine surgery is complex and involves various steps. Current robotic technology is mostly aimed at assisting with pedicle screw insertion. This report evaluates the feasibility of robot-assisted pedicle instrumentation in an academic environment with the involvement of residents and fellows. METHODS The Renaissance Guidance System was used to plan and execute pedicle screw placement in open and percutaneous consecutive cases performed in the period of December 2015 to December 2016. The database was reviewed to assess the usability of the robot by neurosurgical trainees...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463608/editorial-the-next-generation-of-powered-exoskeleton-use-in-spinal-cord-injury
#17
George M Ghobrial, Michael Y Wang
No abstract text is available yet for this article.
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463607/introduction-robotics-in-neurosurgery
#18
Michael Y Wang, Tetsuya Goto, Enrico Tessitore, Anand Veeravagu
No abstract text is available yet for this article.
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28463584/robotic-paravertebral-schwannoma-resection-at-extreme-locations-of-the-thoracic-cavity
#19
Giacomo Pacchiarotti, Michael Y Wang, John Paul G Kolcun, Ken Hsuan-Kan Chang, Motasem Al Maaieh, Victor S Reis, Dao M Nguyen
Solitary paravertebral schwannomas in the thoracic spine and lacking an intraspinal component are uncommon. These benign nerve sheath tumors are typically treated using complete resection with an excellent outcome. Resection of these tumors is achieved by an anterior approach via open thoracotomy or minimally invasive thoracoscopy, by a posterior approach via laminectomy, or by a combination of both approaches. These tumors most commonly occur in the midthoracic region, for which surgical removal is usually straightforward...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28384064/abstracts-of-the-10th-annual-meeting-of-the-lumbar-spine-research-society-chicago-illinois-%C3%A2-april-6-7-2017
#20
(no author information available yet)
No abstract text is available yet for this article.
April 2017: Neurosurgical Focus
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