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https://www.readbyqxmd.com/read/28328842/three-dimensional-printing-and-computer-navigation-assisted-hemipelvectomy-for-en-bloc-resection-of-osteochondroma-a-case-report
#1
Yaqing Zhang, Lianjiang Wen, Jun Zhang, Guoliang Yan, Yue Zhou, Bo Huang
RATIONALE: Three-dimensional (3D) printed templates can be designed to match an individual's anatomy, allowing surgeons to refine preoperative planning. In addition, the use of computer navigation (NAV) is gaining popularity to improve surgical accuracy in the resection of pelvic tumors. However, its use in combination with 3D printing to assist complex pelvic tumor resection has not been reported. PATIENT CONCERNS: A 36-year-old man presented with left-sided pelvic pain and a fast-growing mass...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28327138/accuracy-of-pedicle-screw-placement-in-patients-with-marfan-syndrome
#2
Jun Qiao, Feng Zhu, Leilei Xu, Zhen Liu, Xu Sun, Bangping Qian, Qing Jiang, Zezhang Zhu, Yong Qiu
BACKGROUND: There is no study concerning safety and accuracy of pedicle screw placement in Marfan syndrome. The objective of this study is to investigate accuracy and safety of pedicle screw placement in scoliosis associated with Marfan syndrome. METHODS: CT scanning was performed to analyze accuracy of pedicle screw placement. Pedicle perforations were classified as medial, lateral or anterior and categorized to four grades: ≤ 2 mm as Grade 1, 2.1-4.0 mm as Grade 2, 4...
March 21, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28323088/localization-of-the-corticospinal-tract-within-the-porcine-spinal-cord-implications-for-experimental-modeling-of-traumatic-spinal-cord-injury
#3
Anna Victoria Leonard, Joshua York Menendez, Betty Maki Pat, Mark N Hadley, Candace Lorraine Floyd
Spinal cord injury (SCI) researchers have predominately utilized rodents for SCI modeling and experimentation. Unfortunately, a large number of novel therapies developed in rodent models have failed to demonstrate efficacy in human clinical trials which suggests that improved animal models are an important translational tool. Recently, porcine models of SCI have been identified as a valuable intermediary model for preclinical evaluation of promising therapies to aid clinical translation. However, the localization of the major spinal tracts in pigs has not yet been described...
March 16, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28299317/application-of-intraoperative-ct-guided-navigation-in-simultaneous-minimally-invasive-anterior-and-posterior-surgery-for-infectious-spondylitis
#4
Meng-Huang Wu, Navneet Kumar Dubey, Ching-Yu Lee, Yen-Yao Li, Chin-Chang Cheng, Chung-Sheng Shi, Tsung-Jen Huang
This study was aimed at evaluating the safety and efficacy of using intraoperative computed tomography- (iCT-) guided navigation in simultaneous minimally invasive anterior and posterior surgery for infectious spondylitis. Nine patients with infectious spondylitis were enrolled in this study. The average operative time was 327.6 min (range, 210-490) and intraoperative blood loss was 407 cc (range, 50-1,200). The average duration of hospital stay was 48.9 days (range, 11-76). Out of a total of 54 pedicle screws employed, 53 screws (98...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28296814/pedicle-screw-safety-how-much-anterior-breach-is-safe-a-cadaveric-and-ct-based-study
#5
Vishal Sarwahi, Monica Payares, Rachel Gecelter, Stephen Wendolowski, Kathleen Maguire, Dan Wang, Beverly Thornhill, Terry Amaral
STUDY DESIGN: Clinical retrospective chart review and basic science study OBJECTIVES.: To determine the safety limits of an anterior/anterorolateral misplaced pedicle screw on CT scan in spinal deformity. SUMMARY OF BACKGROUND DATA: While the limits of medial breaches (<4 mm) are known, the safe limits for anterior/anterolateral breaches in spine deformity are not yet defined. METHODS: This study had two parts. In part I, post-operative CT scans of 165 patients operated on for spine deformity were reviewed for screw misplacement (2800 screws)...
March 14, 2017: Spine
https://www.readbyqxmd.com/read/28296707/the-use-of-intraoperative-ct-and-navigation-for-the-treatment-of-spinal-deformity-in-open-and-minimally-invasive-surgery
#6
Joseph R O'Brien
No abstract text is available yet for this article.
April 1, 2017: Spine
https://www.readbyqxmd.com/read/28291408/clinical-outcomes-following-spinal-fusion-using-an-intraoperative-computed-tomographic-3d-imaging-system
#7
Roy Xiao, Jacob A Miller, Navin C Sabharwal, Daniel Lubelski, Vincent J Alentado, Andrew T Healy, Thomas E Mroz, Edward C Benzel
OBJECTIVE Improvements in imaging technology have steadily advanced surgical approaches. Within the field of spine surgery, assistance from the O-arm Multidimensional Surgical Imaging System has been established to yield superior accuracy of pedicle screw insertion compared with freehand and fluoroscopic approaches. Despite this evidence, no studies have investigated the clinical relevance associated with increased accuracy. Accordingly, the objective of this study was to investigate the clinical outcomes following thoracolumbar spinal fusion associated with O-arm-assisted navigation...
March 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28253945/-pyogenic-spinal-infections-in-adults-a-5-year-experience-from-a-tertiary-care-centre
#8
O Džupová, R Cihlářová
PURPOSE OF THE STUDY To describe epidemiological and clinical features of pyogenic spinal infections in patients treated at the Department of Infectious, Parasitic and Tropical Diseases of the Hospital Na Bulovce in 2010-2014, and to analyse a predictive significance of selected variables. MATERIAL AND METHODS A single-centre retrospective cohort study carried out from 1.1.2010 to 31.12.2014 enrolled adult patients with septic spondylitis, discitis and facet joint infections. Recorded parameters included: demographics, chronic comorbidities, time to diagnosis, radiological work-up, anatomical level of spinal infection, source of infection, etiological agent, complications, treatment and outcomes...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28244930/response-to-the-letter-from-dr-noelle-larson-et-al-regarding-our-publication-by-richerand-et-al-comparison-of-effective-dose-of-radiation-during-pedicle-screw-placement-using-intraoperative-computed-tomography-navigation-versus-fluoroscopy-in-children-with
#9
https://www.readbyqxmd.com/read/28244892/3d-navigation-guided-resection-of-giant-ventral-cervical-intradural-schwannoma-with-360-degree-stabilization
#10
Ibrahim Hussain, Rodrigo Navarro-Ramirez, Gernot Lang, Roger Härtl
Giant schwannomas are defined as intradural extramedullary tumors that span >2 vertebral body lengths. Although uncommon, these lesions can cause significant mass effect on the spinal cord and subsequent neurologic compromise. Gross total resection is the goal of operative intervention, however, is extremely challenging in cases where the tumor occupies a ventral, midline position within the lower cervical thecal sac. Using a representative case presentation, we describe an adult male with insidious progression of upper extremity radicular pain and paresthesias, found to have a ventral, solid/cystic C5-C7 giant schwannoma...
February 27, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28242594/public-funding-and-open-access-to-research-a-review-of-canadian-multiple-sclerosis-research
#11
Caitlin Bakker, Carol Stephenson, Erin Stephenson, Debbie Chaves
BACKGROUND: Multiple sclerosis (MS), a progressive demyelinating disease of the brain and spinal cord, is the leading cause of nontraumatic neurological damage in young adults. Canada has one of the highest reported incidents of MS, with estimates between 55 and 240 per 100,000 individuals. Between 2009 and 2014, the MS Society of Canada provided over Can $90 million to researchers and, since 2013, has encouraged researchers to make both current and previous research products openly available...
February 27, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28202041/the-microtubule-plus-end-tracking-protein-tacc3-promotes-persistent-axon-outgrowth-and-mediates-responses-to-axon-guidance-signals-during-development
#12
Burcu Erdogan, Garrett M Cammarata, Eric J Lee, Benjamin C Pratt, Andrew F Francl, Erin L Rutherford, Laura Anne Lowery
BACKGROUND: Formation of precise neuronal connections requires proper axon guidance. Microtubules (MTs) of the growth cone provide a critical driving force during navigation of the growing ends of axons. Pioneer MTs and their plus-end tracking proteins (+TIPs) are thought to play integrative roles during this navigation. TACC3 is a + TIP that we have previously implicated in regulating MT dynamics within axons. However, the role of TACC3 in axon guidance has not been previously explored...
February 15, 2017: Neural Development
https://www.readbyqxmd.com/read/28186473/minimally-invasive-scoliosis-surgery-assisted-by-o-arm-navigation-for-lenke-type-5c-adolescent-idiopathic-scoliosis-a-comparison-with-standard-open-approach-spinal-instrumentation
#13
Weiguo Zhu, Weixiang Sun, Leilei Xu, Xu Sun, Zhen Liu, Yong Qiu, Zezhang Zhu
OBJECTIVE Recently, minimally invasive scoliosis surgery (MISS) was introduced for the correction of adult scoliosis. Multiple benefits including a good deformity correction rate and fewer complications have been demonstrated. However, few studies have reported on the use of MISS for the management of adolescent idiopathic scoliosis (AIS). The purpose of this study was to investigate the outcome of posterior MISS assisted by O-arm navigation for the correction of Lenke Type 5C AIS. METHODS The authors searched a database for all patients with AIS who had been treated with either MISS or PSF between November 2012 and January 2014...
February 10, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28186470/image-guidance-based-on-mri-for-spinal-interstitial-laser-thermotherapy-technical-aspects-and-accuracy
#14
Claudio E Tatsui, Clarissa N G Nascimento, Dima Suki, Behrang Amini, Jing Li, Amol J Ghia, Jonathan G Thomas, R Jason Stafford, Laurence D Rhines, Juan P Cata, Ashok J Kumar, Ganesh Rao
OBJECTIVE Image guidance for spinal procedures is based on 3D-fluoroscopy or CT, which provide poor visualization of soft tissues, including the spinal cord. To overcome this limitation, the authors developed a method to register intraoperative MRI (iMRI) of the spine into a neuronavigation system, allowing excellent visualization of the spinal cord. This novel technique improved the accuracy in the deployment of laser interstitial thermal therapy probes for the treatment of metastatic spinal cord compression...
February 10, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28184002/renal-cell-carcinoma-metastasis-involving-vertebral-hemangioma-dual-percutaneous-treatment-by-navigational-bipolar-radiofrequency-ablation-and-high-viscosity-cement-vertebroplasty
#15
Jean-Baptiste Zerlauth, Reto Meuli, Vincent Dunet
The case of a 70-year-old woman with progressive renal cell carcinoma (RCC) metastatic invasion of a L3 vertebral hemangioma treated by dual percutaneous radiofrequency ablation (RFA) and vertebroplasty is reported. The patient was surgically treated for RCC in 2001. Chemotherapy and immunotherapy were introduced in 2013 for ovarian, bladder and cerebral metastatic disease. An asymptomatic L3 benign hemangioma was noticed at this time. One-year CT and MRI follow-up studies demonstrated a nodular isolated soft tissue lesion involving the anterior edge of the hemangioma...
February 9, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28177300/spinal-pedicle-screw-planning-using-deformable-atlas-registration
#16
J Goerres, A Uneri, T De Silva, M Ketcha, S Reaungamornrat, M Jacobson, S Vogt, G Kleinszig, G Osgood, J-P Wolinsky, J H Siewerdsen
Spinal screw placement is a challenging task due to small bone corridors and high risk of neurological or vascular complications, benefiting from precision guidance/navigation and quality assurance (QA). Implicit to both guidance and QA is the definition of a surgical plan-i.e. the desired trajectories and device selection for target vertebrae-conventionally requiring time-consuming manual annotations by a skilled surgeon. We propose automation of such planning by deriving the pedicle trajectory and device selection from a patient's preoperative CT or MRI...
April 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28168338/radiation-exposure-to-the-patients-in-thoracic-and-lumbar-spine-fusion-using-a-new-intraoperative-cone-beam-computed-tomography-imaging-technique-a-preliminary-study
#17
Ludovic Kaminski, V Cordemans, O Cartiaux, M Van Cauter
PURPOSE: The goals of this paper are to assess the ionizing radiation exposure to the patients during thoracic and lumbar spinal fusion using a new intraoperative 3D imaging system and to evaluate the factors that could explain the variability in the observed doses. METHOD: We retrospectively reviewed 97 patients who underwent posterior instrumented thoracic and/or lumbar spinal fusion from December 2013 to November 2014. Primary data were the total dose area product (total DAP, Gy cm(2)) and total skin dose (total SD, mGy)...
February 6, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28163511/use-of-frameless-stereotactic-neuronavigation-and-o-arm-for-transoral-transpalatal-odontoidectomy-to-treat-a-very-high-basilar-invagination
#18
Skanda Moorthy, Amol Raheja, Deepak Agrawal
Frameless stereotactic neuronavigation system has been in wide use since many years for precise localization of cranial tumors and navigation for spinal instrumentation. We present its usage in the localization of odontoid process in a very high basilar invagination for a transoral transpalatal resection of the same. We discuss the technical aspects of assembly of neuronavigation system, O-arm and Mayfield head frame on Allen spine system to achieve precise and accurate localization of high riding odontoid process through an extremely narrow operative corridor...
December 2016: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28156208/image-guided-intrathecal-baclofen-pump-catheter-implantation-a-technical-note-and-case-series
#19
Shenandoah Robinson, Faith C Robertson, Hormuzdiyar H Dasenbrock, Cormac P O'Brien, Charles Berde, Horacio Padua
OBJECTIVE Medically refractory spasticity and dystonia are often alleviated with intrathecal baclofen (ITB) administration through an indwelling catheter inserted in the lumbar spine. In patients with cerebral palsy, however, there is a high incidence of concomitant neuromuscular scoliosis. ITB placement may be technically challenging in those who have severe spinal deformity or who have undergone prior instrumented thoracolumbar fusion. Although prior reports have described drilling through the lumbar fusion mass with a high-speed bur, as well as IT catheter implantation at the foramen magnum or cervical spine, these approaches have notable limitations...
February 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28154154/renal-cell-carcinoma-metastasis-involving-vertebral-hemangioma-dual-percutaneous-treatment-by-navigational-bipolar-radiofrequency-ablation-and-high-viscosity-cement-vertebroplasty
#20
Jean-Baptiste Zerlauth, Reto Meuli, Vincent Dunet
The case of a 70-year-old woman with progressive renal cell carcinoma (RCC) metastatic invasion of a L3 vertebral hemangioma treated by dual percutaneous radiofrequency ablation (RFA) and vertebroplasty is reported. The patient was surgically treated for RCC in 2001. Chemotherapy and immunotherapy were introduced in 2013 for ovarian, bladder and cerebral metastatic disease. An asymptomatic L3 benign hemangioma was noticed at this time. One-year CT and MRI follow-up studies demonstrated a nodular isolated soft tissue lesion involving the anterior edge of the hemangioma...
February 2, 2017: BMJ Case Reports
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