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Vertebral artery surgery

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https://www.readbyqxmd.com/read/28533943/etiology-and-treatment-of-amyotrophic-lateral-sclerosis
#1
Hernando Rafael, Juan Oscar David, Antonio Santiago Vilca
BACKGROUND: To date all researchers conclude that the etiology of Amyotrophic lateral sclerosis (ALS) is not known. On the contrary, since August 2009, we believe that disease is of ischemic origin in the anterior surface of the medulla oblongata. MATERIAL AND METHOD: We present our surgical experience into 45 patients with ALS (bulbar form in 36 cases and spinal form in 9). Preoperative MRI scans revealed microinfarcts in the medulla oblongata and/or cervical cord...
2017: American Journal of Neurodegenerative Disease
https://www.readbyqxmd.com/read/28528478/the-diagnosis-and-management-of-a-vertebral-artery-loop-causing-cervical-radiculopathy
#2
L Wood, M Czyz, S Forster, Bronek M Boszczyk
BACKGROUND: Cervical radiculopathies are rarely caused by vertebral artery loop formation, which is estimated to be present in less than 3% of patients. It is uncertain what causes the loop formation: some propose an association with spondylotic changes or trauma, whilst others suggest hypertension and atherosclerosis may be responsible. CASE REPORT 1: A 35-year-old male patient presented with signs and symptoms of cervical radiculopathy that was not improved with anterior cervical discectomy and fusion surgery performed 2 years beforehand...
May 20, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28525480/a-new-entrance-technique-for-c2-pedicle-screw-placement-and-the-use-in-patients-with-atlantoaxial-instability
#3
Jia-Ming Liu, Jian Jiang, Zhi-Li Liu, Xin-Hua Long, Wen-Zhao Chen, Yang Zhou, Song Gao, Lai-Chang He, Shan-Hu Huang
STUDY DESIGN: A prospective study and a technique note. OBJECTIVES: To introduce a new entrance technique for C2 pedicle screw placement and to measure the related linear and angular parameters about the entrance point on computed tomography (CT) images. The safety of this technique for patients with atlantoaxial instability was also evaluated. BACKGROUND DATA: Although earlier studies have introduced different methods for C2 pedicle screw placement, the entry points and the angular parameters may be variable...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28525479/outcome-of-bilateral-c1-laminar-hooks-combined-with-c2-pedicle-screw-fixation-for-the-treatment-of-c1-c2-instability-a-report-of-18-cases-from-a-single-chinese-center
#4
Lifeng Lao, Guibin Zhong, Qianyi Li, Xinfeng Li, Bin Chen, Lie Qian, Zude Liu
STUDY DESIGN: A retrospective technical report. OBJECTIVE: To assess the effect of bilateral C1 laminar hooks combined with C2 pedicle screw fixation for the treatment of C1-C2 instability. SUMMARY OF BACKGROUND DATA: Various posterior atlantoaxial fixations for C1-C2 instability have been developed. However, due to anatomic anomalies of the vertebral artery, the smallness of the pedicle, trajectories of broken screws, or a lack of surgical experience, a simple atlantoaxial fixation technique with good safety and effectiveness is urgently needed...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28512617/vertebral-artery-injury-in-c2-3-epidural-schwannoma-resection-a-case-report-and-literature-review
#5
Su Bum Lee, Chae Hong Rhim, Sung Woo Roh, Sang Ryong Jeon, Seung Chul Rhim
The incidence of vertebral artery (VA) injury (VAI) in posterior approach tumor resection surgery is extremely rare, but it can lead to serious complication. In this case, a 57-year-old man underwent surgery for resection of the tumor involving left epidural space and neural foramen at C2-3 level. Iatrogenic VAI occurred suddenly during tumor resection procedure using pituitary forceps. Immediate local hemostasis and maintaining of perfusion for reducing the risk of posterior circulation ischemia were performed...
April 2017: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/28512615/delayed-infarction-of-medullar-and-cerebellum-3-months-after-vertebral-artery-injury-with-c1-2-fracture-case-report
#6
Yunsuk Her, Suk Hyung Kang, Ilhom Abdullaev, Noah Kim
The clinical manifestations of vertebral artery (VA) injury (VAI) after cervical trauma range from asymptomatic to fatal cerebral infarction. Thrombotic occlusion and embolization to the distal arteries can cause cerebellar and brain stem infarction within days after trauma. We report a 64-year-old man who underwent arthrodesis surgery for C1 and C2 fractures. He had left VAI at the C2 transverse foramen site but was asymptomatic. The patient experiences brainstem and cerebellar infarction 3 months after injury to the VA, and we are here to discuss the treatment of VAI after cervical trauma...
April 2017: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/28494130/visualization-of-stereoscopic-anatomic-models-of-the-paranasal-sinuses-and-cervical-vertebrae-from-the-surgical-and-procedural-perspective
#7
Jian Chen, Andrew D Smith, Majid A Khan, Allan R Sinning, Marianne L Conway, Dongmei Cui
Recent improvements in three-dimensional (3D) virtual modeling software allows anatomists to generate high-resolution, visually appealing, colored, anatomical 3D models from computed tomography (CT) images. In this study, high-resolution CT images of a cadaver were used to develop clinically relevant anatomic models including facial skull, nasal cavity, septum, turbinates, paranasal sinuses, optic nerve, pituitary gland, carotid artery, cervical vertebrae, atlanto-axial joint, cervical spinal cord, cervical nerve root, and vertebral artery that can be used to teach clinical trainees (students, residents, and fellows) approaches for trans-sphenoidal pituitary surgery and cervical spine injection procedure...
May 11, 2017: Anatomical Sciences Education
https://www.readbyqxmd.com/read/28489773/ct-analysis-of-anatomical-variation-and-injury-affecting-posterior-pedicle-screw-fixation-for-unstable-hangman-fractures
#8
Guangzhou Li, Qing Wang, Hao Liu
The aim of this study was to evaluate the anatomical variations and injuries in patients with unstable Hangman fractures that affected the posterior pedicle screw placement of C2 to C3 and retrospectively review our experience with management of these fractures. Clinical data were reviewed in 72 patients with unstable Hangman fractures, especially using 3-dimensional computed tomography (3D-CT) scan to identify the presence of anatomical variations or injuries and analyzing the treatment strategies we used...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28484132/unilateral-trans-cerebellomedullary-fissure-approach-for-occipital-artery-to-posterior-inferior-cerebellar-artery-bypass-during-aneurysmal-surgery
#9
Hiroshi Abe, Koichi Miki, Hiromasa Kobayashi, Toshiyasu Ogata, Mitsutoshi Iwaasa, Toshio Matsushima, Tooru Inoue
Occipital artery (OA) to the posterior inferior cerebellar artery (PICA) bypass is indispensable for the management of complex aneurysms of the PICA that cannot be reconstructed with surgical clipping or coil embolization. Although OA-PICA bypass is a comparatively standard procedure, the bypass is difficult to perform in some cases because of the location and situation of the PICA. We describe the usefulness of the unilateral trans-cerebellomedullary fissure (CMF) approach for OA-PICA bypass. Thirty patients with aneurysms in the vertebral artery (VA) or PICA were treated using OA-PICA bypasses between 2010 and 2015...
May 9, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28475705/management-of-penetrating-cerebrovascular-injuries-in-pediatric-trauma-a-retrospective-multicenter-study
#10
Vijay M Ravindra, Michael C Dewan, Hassan Akbari, Robert J Bollo, David Limbrick, Andrew Jea, Robert P Naftel, Jay K Riva-Cambrin
BACKGROUND: Blunt cerebrovascular injury is uncommon in the pediatric population; penetrating cerebrovascular injuries are even rarer and are thus poorly understood. OBJECTIVE: To describe the diagnosis and management of penetrating cerebrovascular injuries and describe outcomes of available treatment modalities. METHODS: Clinical and radiographic data were collected retrospectively from a multicenter trauma registry for children screened for cerebrovascular injury during 2003 to 2013 at 4 academic pediatric trauma centers...
May 5, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28458824/vertebral-artery-dissection-following-a-posterior-cervical-foraminotomy
#11
Aniruddha A Sheth, Stephen Honeybul
Vertebral artery dissection following a posterior cervical foraminotomy with rhizolysis of the subaxial spine has not been described before. A 46-year-old lady underwent the procedure for a left C6 radiculopathy with a focal disc herniation with no intraoperative complications. Seven hours post-operatively, she developed a right homonymous hemianopia, thalamic dysphasia, gait and memory impairment. Imaging demonstrated an occlusion to the left vertebral artery from C7/T1 to C4 with a dissection flap noted at the inferior margin...
February 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28456070/ponticulus-posticus-morphometric-analysis-and-its-anatomical-implications-for-occipito-cervical-fusion
#12
Myung Soo Song, Ho Jin Lee, Jong Tae Kim, Jung Hee Kim, Jae Taek Hong
OBJECTIVE: The purpose of this study was to evaluate the morphometric characteristics of ponticulus posticus (PP) and determine the impact of two promising high cervical operations (posterior arch to lateral mass screw fixation (PALMSF) and occipital condyle fixation (OCF)). PATIENTS AND METHODS: We evaluated retrospective data from a total of 2628 head and neck 3-dimensional CT-angiographies (3D-CTA) that did not have bony or vascular abnormalities. The PP anomaly cases were confirmed, then we measured vertebral artery groove height (VAGH), arch to vertebral artery distance (AVD) and posterior arch height (PAH) for PALMSF...
April 3, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28451487/epidemiology-and-outcomes-of-vertebral-artery-injury-in-16%C3%A2-582-cervical-spine-surgery-patients-an-aospine-north-america-multicenter-study
#13
Wellington K Hsu, Abhishek Kannan, Harry T Mai, Michael G Fehlings, Zachary A Smith, Vincent C Traynelis, Ziya L Gokaslan, Alan S Hilibrand, Ahmad Nassr, Paul M Arnold, Thomas E Mroz, Mohamad Bydon, Eric M Massicotte, Wilson Z Ray, Michael P Steinmetz, Gabriel A Smith, Jonathan Pace, Mark Corriveau, Sungho Lee, Robert E Isaacs, Jeffrey C Wang, Elizabeth L Lord, Zorica Buser, K Daniel Riew
STUDY DESIGN: A multicenter retrospective case series was compiled involving 21 medical institutions. Inclusion criteria included patients who underwent cervical spine surgery between 2005 and 2011 and who sustained a vertebral artery injury (VAI). OBJECTIVE: To report the frequency, risk factors, outcomes, and management goals of VAI in patients who have undergone cervical spine surgery. METHODS: Patients were evaluated on the basis of condition-specific functional status using the Neck Disability Index (NDI), modified Japanese Orthopaedic Association (mJOA) score, the Nurick scale, and the 36-Item Short-Form Health Survey (SF-36)...
April 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28437351/one-stage-posterior-spinal-osteotomy-in-severe-spinal-deformities-a-total-of-147-cases
#14
Lei Xia, Ning Li, Dan Wang, Ming Liu, Jun-Wei Li, De-Ming Bao, Peng Li
STUDY DESIGN: This is a retrospective study. OBJECTIVES: The treatment of severe spinal deformities is still a difficult surgical challenge. It is generally significant to identify the related complications performed to a consecutive series of patients with severe spinal deformity and managed by 1-stage posterior spinal osteotomy. SUMMARY OF BACKGROUND DATA: We investigated data from 147 consecutive patients (75 males and 72 females) with severe deformity and managed by Smith-Petersen osteotomy, pedicle subtraction osteotomy, or vertebral column resection between years 2006 and 2012 with >2-year follow-up...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28434962/outcome-of-the-biomedical-glue-sling-technique-in-microvascular-decompression-for-hemifacial-spasm-involving-the-vertebral-artery
#15
Xin Zhang, Hua Zhao, Jin Zhu, Yinda Tang, Tingting Ying, Yan Yuan, Shiting Li
BACKGROUND: Microvascular decompression (MVD) is the most useful treatment for hemifacial spasm (HFS). In cases of vertebral artery (VA) compression of the facial nerve, MVD is often difficult. In this study, we compared the outcome of the biomedical glue sling technique with the traditional technique in MVD for HFS involving the VA. METHODS: This was a retrospective study of patients with HFS treated by MVD, and was conducted between January 2013 and December 2015...
April 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28403693/anterior-retropharyngeal-plate-screw-fixation-with-bilateral-anterior-transarticular-screws-for-odontoid-fractures-a-new-comprehensive-technique
#16
Sushil Patkar
INTRODUCTION: A certain group of odontoid fractures (Anderson and D' Alonzo Type-2) are usually offered surgical treatment. Common surgical option is an anterior odontoid screw. Some of the fractures are not suitable for anterior odontoid screw (anterior oblique, displaced distal fragments and those with atlantoaxial instability) and these are usually offered posterior transarticular screws (Magerl's) or posterior atlantoaxial screw rod/plate fixation (Goel-Harms technique). Posterior surgery involves atlantoaxial fixation with an indirect attempt to reduce and fuse the fracture ...
April 13, 2017: Neurological Research
https://www.readbyqxmd.com/read/28399527/blunt-traumatic-extracranial-cerebrovascular-injury-and-ischemic-stroke
#17
Paul M Foreman, Mark R Harrigan
BACKGROUND: Ischemic stroke occurs in a significant subset of patients with blunt traumatic cerebrovascular injury (TCVI). The patients are victims of motor vehicle crashes, assaults or other high-energy collisions, and suffer ischemic stroke due to injury to the extracranial carotid or vertebral arteries. SUMMARY: An increasing number of patients with TCVI are being identified, largely because of the expanding use of computed tomography angiography for screening patients with blunt trauma...
April 11, 2017: Cerebrovascular Diseases Extra
https://www.readbyqxmd.com/read/28383091/a-new-technique-for-the-surgical-treatment-of-atlantoaxial-instability-c1-lateral-mass-and-c2-3-transfacet-screwing
#18
Salim Senturk, Goktug Akyoldas, Onur Yaman, Ali Fahir Ozer
AIM: Atlantoaxial instability is a special entity that may be caused by many disorders such as trauma, tumor, arthritis, congenital malformation and infection. Atlantoaxial fixation is needed to provide stability, prevent neurological deficits and correct deformity. The objective of this study is to introduce an alternative technique for the treatment of atlantoaxial instability in patients who have vertebral artery anomaly, anomalous C2 or osteoporosis. MATERIAL AND METHODS: C1-2-3 fixation was performed in a 50-years-old, male patient with atlantoaxial instability due to os odontoideum...
March 9, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28379515/far-lateral-approach-without-drilling-the-occipital-condyle-for-vertebral-artery-posterior-inferior-cerebellar-artery-aneurysms
#19
Pablo Seoane, Samuel Kalb, Justin C Clark, Juan C Rivas, David S Xu, George A C Mendes, Mark C Preul, Joseph M Zabramski, Robert F Spetzler, Peter Nakaji
BACKGROUND: The far-lateral transcondylar surgical approach is often used to clip vertebral artery (VA) and posterior inferior cerebellar artery (PICA) aneurysms. The role of condyle resection during this approach is controversial. OBJECTIVE: To evaluate patient outcomes in patients with VA-PICA aneurysms in whom drilling the occipital condyle was not necessary. METHODS: Between May 2005 and December 2012, a total of 56 consecutive patients with incidental or ruptured VA-PICA aneurysms underwent surgery with a far-lateral approach without condylar resection...
April 4, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28355771/-progress-of-problems-related-to-the-reconstruction-of-aortic-arch-in-acute-type-a-aortic-dissection
#20
N N Liu, L Z Sun
Aortic arch reconstruction is one of the most challenging operations in aortic surgery. Anatomical abnormalities of the aortic arch, including bovine aortic arch, aberrant right subclavian artery, and single vertebral artery have direct impact on the choice of surgical procedures and methods of brain protection.The risk of aortic arch reconstruction and the difficulty of operation, it is possible to avoid the injury of patients by strictly grasping the indication of operation. Intraoperative arterial cannulation and brain protection strategies are directly related to the success of the operation...
April 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
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