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Foramen transversarium

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https://www.readbyqxmd.com/read/28250638/odontoidectomy-through-posterior-midline-approach-followed-by-same-sitting-occipitocervical-fixation-a-cadaveric-study
#1
Ehab Mohamed Eissa, Mohamed Mohi Eldin
OBJECT: Atlantoaxial instability with irreducible odontoid process is one of the challenges in spine surgery. These lesions are commonly treated through anterior transoral approach which is followed by posterior atlantoaxial fusion. However, there are still many limitations, especially cerebrospinal fluid fistula with subsequent life-threatening infection, difficulty in cases with limited opening of mouth due to temporomandibular arthritis or anomalies of naso-oropharynx. Türe et al...
January 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/28207465/two-rare-variants-of-left-vertebral-artery
#2
Rajani Singh
Though the variations of vertebral artery are clinically asymptomatic yet abnormalities are of diagnostic importance either prior to vascular surgery in the neck region or in patients of intravascular diseases such as arteriovenous malformations or cerebral aneurysms. Therefore, the aim of the study is to bring out 2 variations in the configuration of vertebral artery and their clinical implication. During dissection of thorax of 2 female cadavers, 2 different variants of configurations of left vertebral arteries were observed...
February 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28128694/the-rectus-capitis-lateralis-and-the-condylar-triangle-important-landmarks-in-posterior-and-lateral-approaches-to-the-jugular-foramen
#3
Michael A Cohen, Alexander I Evins, Gennaro Lapadula, Leopold Arko, Philip E Stieg, Antonio Bernardo
OBJECTIVE The rectus capitis lateralis (RCL) is a small posterior cervical muscle that originates from the transverse process of C-1 and inserts onto the jugular process of the occipital bone. The authors describe the RCL and its anatomical relationships, and discuss its utility as a surgical landmark for safe exposure of the jugular foramen in extended or combined skull base approaches. In addition, the condylar triangle is defined as a landmark for localizing the vertebral artery (VA) and occipital condyle...
January 27, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28033295/a-sewing-needle-in-contact-with-the-cervical-dura-mater-and-vertebral-artery-a-case-report
#4
Fumihiro Arizumi, Shinichi Inoue, Toshiya Tachibana, Keishi Maruo, Shinichi Yoshiya
RATIONALE: Although cervical foreign bodies have been previously reported, the report of a needle in the cervical spinal cord is rare. Herein, we report a rare case of a sewing needle in contact with the cervical dura mater and vertebral artery. PATIENTS CONCERNS: A 47-year-old man presented with discomfort in the posterior region of his neck. Approximately 2 years before admission, he suffered a stiff neck and had stabbed the posterior region of his neck with a sewing needle...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27979639/the-use-of-high-risk-criteria-in-screening-patients-for-blunt-cerebrovascular-injury-a-survey
#5
Xiao Wu, Ajay Malhotra, Howard P Forman, Diego Nunez, Pina Sanelli
RATIONALE AND OBJECTIVES: Blunt cerebrovascular injury (BCVI) is uncommon, but delayed detection can have disastrous consequences. The Denver criteria are the most commonly used screening criteria. We aim to examine the utilization of screening criteria in the emergency department (ED) of our institution and assess whether patients with risk factors were imaged. MATERIALS AND METHODS: A survey questionnaire was sent out to radiologists in a large academic institution...
December 12, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27830891/morphometric-multislice-computed-tomography-examination-of-the-craniovertebral-junction-in-neck-flexion-and-extension
#6
Slobodan Marinkovic, Ivan Milić, Igor Djorić, Luciano Brigante, Aleksandar Miljatović, Laslo Puškaš, Slobodan Kapor, Jelena Boljanović
BACKGROUND: Detailed study of the craniovertebral junction (CVJ) is necessary to completely understand the mechanism of its flexion and extension. MATERIALS AND METHODS: One cadaver head was sectioned in the sagittal plane. Also, in 22 volunteers, examined using the multislice computerized tomography (MSCT), 14 parameters and 2 angles were measured in the neutral position, flexion and extension. RESULTS: The obtained measurements showed the anterior part of the occiput to move inferiorly in flexion, and the anterior atlas arch and the tip of the dens to get closer to the basion...
November 10, 2016: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/27554348/anatomical-variations-of-the-foramen-transversarium-in-cervical-vertebrae-findings-review-of-the-literature-and-clinical-significance-during-cervical-spine-surgery
#7
Aristeidis H Zibis, Vasileios Mitrousias, Kyriaki Baxevanidou, Michael Hantes, Theofilos Karachalios, Dimitrios Arvanitis
PURPOSE: To describe certain anatomical variations of the foramen transversarium, in spine cervical vertebrae in a contemporary specimen of an Indo-European population and approach their clinical importance during cervical spine surgery. METHODS: 102 cervical vertebrae (C2-C7) from 17 different skeletons, intact without any degenerative or traumatic disorders, which belonged to the collection of the Department of Anatomy, were examined. The age of specimens at the time of their death was between 25 and 65 years...
December 2016: European Spine Journal
https://www.readbyqxmd.com/read/27366277/lethal-penetrating-stab-injury-to-the-vertebral-artery-a-case-report-with-review-of-literature
#8
Avijit Sarkari, Pankaj K Singh, Ashok K Mahapatra
The vertebral arteries are rarely injured in penetrating neck trauma due to their deep location in the foramen transversarium. These injuries in isolation are not associated with neurological deficits or ischemic changes on radiology as the collaterals are usually sufficient. We report a case of fatal unilateral vertebral artery stab injury leading to bilateral cerebellar and brainstem infarction. The carotid Doppler ruled out the presence of any carotid artery injury. Life-threatening injuries are possible in the presence of hypoplastic contralateral vertebral artery or inadequate flow from the anterior circulation not making up for the deficit...
July 2016: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/27176112/a-comparison-of-open-versus-percutaneous-cervical-transfacet-fixation
#9
COMPARATIVE STUDY
Adeel Husain, Yusuf T Akpolat, Daniel K Palmer, David Rios, Kevin R Criswell, Wayne K Cheng
OBJECTIVE The aim of this study is to describe a technique for percutaneous cervical transfacet screw placement and compare this technique to the open technique with regard to the accuracy of facet capture and the potential of placing neurovascular structures at risk. METHODS Eight cadaveric cervical spines were harvested. One side of each spine was assigned to the percutaneous group, and the other side to the open group. The spines were instrumented from C-3 to T-1 (80 screws). The distance to the spinal canal, foramen transversarium, and neural foramen were measured to determine the likelihood of placing neurovascular structures at risk...
October 2016: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/27170334/short-isthmic-versus-long-trans-isthmic-c2-screw-anatomical-and-biomechanical-evaluation
#10
François Lucas, David Mitton, Bertrand Frechede, Cédric Barrey
INTRODUCTION: The Harms technique is now considered as the gold standard to stabilize C1-C2 cervical spine. It has been reported to decrease the risk of vertebral artery injury. However, the risk of vascular injury does not totally disappear, particularly due to the proximity of the trans-isthmic C2 screw with the foramen transversarium of C2. In order to decrease this risk of vertebral artery injury, it has been proposed to use a shorter screw which stops before the foramen transversarium...
October 2016: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/27137997/three-dimensional-computed-tomography-angiographic-study-of-the-vertebral-artery-in-patients-with-congenital-craniovertebral-junction-anomalies
#11
Laxminadh Sivaraju, Sunithi Mani, Krishna Prabhu, Roy Thomas Daniel, Ari George Chacko
PURPOSE: To describe vertebral artery (VA) course at the C0-C1-C2 complex in patients with congenital bony craniovertebral junction (CVJ) anomalies. METHODS: We studied the course of 169 VAs in 86 patients with congenital bony CVJ anomalies [basilar invagination (42), os odontoideum (33), and irreducible atlantoaxial dislocation (11)]. Occipitalized atlas occurred in 41 patients (30 complete and 11 partial). Using axial, coronal and sagittal three-dimensional computed tomography (3D-CT) angiograms, we traced the VA bilaterally at the CVJ and correlated the course to the presence or absence of occipitalization of the atlas...
May 2, 2016: European Spine Journal
https://www.readbyqxmd.com/read/26609512/pedicle-reduction-osteotomy-in-the-upper-cervical-spine-technique-case-report-and-review-of-the-literature
#12
Nicholas Post, Qais Naziri, Colin S Cooper, Robert Pivec, Carl B Paulino
OBJECTIVE: To present a case report of the correction of a degenerative cervical 45-degree kyphosis centered at C4 with a single stage PSO. SUMMARY OF BACKGROUND DATA: Correction of a fixed cervical kyphosis is a surgical challenge that is frequently managed with a combination of anterior and posterior surgical procedures. An alternative the three stage operation is a single stage pedicle subtraction osteotomy (PSO). A PSO releases the posterior, middle and anterior columns of the spine by resecting the facet joints, pedicles, and a portion of the vertebral body at the apex of a kyphosis through a posterior approach...
2015: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/26607649/detailed-description-of-anatomy-of-the-fracture-line-in-hangman-s-injury-a-retrospective-observational-study-on-motor-vehicle-accident-victims
#13
K Venugopal Menon, Sawsan Taif
OBJECTIVE: To study the precise location of fracture line in hangman's fracture to determine the fracture patterns, symmetry and involvement of different vertebral elements. METHODS: 32 cases of hangman's fractures were retrospectively evaluated. All patients presented with motor vehicle accidents. CT scans were studied to accurately localize the fracture lines. Symmetry of fracture lines on both sides was assessed, and involvement of the vertebral bodies, lamina, facet joints and foramen transversarium was also determined...
2016: British Journal of Radiology
https://www.readbyqxmd.com/read/26448876/dimensions-and-anatomical-variants-of-the-foramen-transversarium-of-typical-cervical-vertebrae
#14
Santosh Kaur Sangari, Paul-Michel Dossous, Thomas Heineman, Estomih Phillip Mtui
The study was conducted on random sample of seventy-one dried, typical cervical vertebrae (C3-C6). The data on the age, sex, and built was not available. Using vernier calipers with 0.01 mm accuracy, the anteroposterior and transverse diameters of transverse foramina and their distance from the medial margin of the uncinate process were measured bilaterally. The mean diameter of the right/left transverse foramen varied from 2.54 mm to 7.79 mm (mean = 5.55 ± 0.87 mm) and from 2.65 mm to 7.35 mm (mean = 5...
2015: Anatomy Research International
https://www.readbyqxmd.com/read/26352746/posterior-arch-defect-of-the-atlas-associated-to-absence-of-costal-element-of-foramen-transversarium-from-16th-century-sardinia-italy
#15
Valentina Giuffra, Andrea Montella, Eugenia Tognotti, Marco Milanese, Pasquale Bandiera
STUDY DESIGN: A paleopathological case of posterior arch defect of the atlas associated to the absence of costal element of the foramen transversarium. OBJECTIVE: In living patients as well as in postmortem analysis it should be difficult to distinguish between a congenital and an acquired anomaly. Any anomaly in the anatomy of atlas should be taken into consideration by clinicians, surgeons, radiologists, and anatomists in order to avoid misinterpretations and clinical complications...
January 2016: Spine
https://www.readbyqxmd.com/read/26053811/risk-stratification-of-vertebral-artery-vulnerability-during-surgery-for-congenital-atlanto-axial-dislocation-with-or-without-an-occipitalized-atlas
#16
Jayesh Sardhara, Sanjay Behari, B Madan Mohan, Awadhesh K Jaiswal, Rabi N Sahu, Arun Srivastava, Anant Mehrotra, Hira Lal
CONTEXT: Variability in dimensions and course of vertebral artery (VA) makes it vulnerable to injury during surgery for congenital atlanto-axial dislocation (AAD) with or without an occipitalized atlas. AIMS: This prospective study attempts to define anatomical variations that render VA at the craniovertebral junction (CVJ) vulnerable to injury during transoral decompression and posterior stabilization procedures; and, to propose a classification that helps in preoperative risk stratification...
May 2015: Neurology India
https://www.readbyqxmd.com/read/25526587/safety-evaluation-of-freehand-lateral-mass-screw-fixation-in-the-subaxial-cervical-spine-evaluation-of-1256-screws
#17
Hak-Sun Kim, Kyung-Soo Suk, Seong-Hwan Moon, Hwan-Mo Lee, Kyung Chung Kang, Sang-Hun Lee, Jin-Soo Kim
STUDY DESIGN: Prospective study. OBJECTIVE: To evaluate the safety of the lateral mass screw (LMS) fixation. SUMMARY OF BACKGROUND DATA: LMS fixation has been known to have risk of injury to vertebral artery, nerve root, or facet joints. METHODS: A consecutive series of 178 patients undergoing planned LMS fixation were studied. Screw fixation was performed using the freehand technique. Entry point of screws was 2-mm medial from the center of the lateral mass...
January 1, 2015: Spine
https://www.readbyqxmd.com/read/25463403/laminar-screw-fixation-of-the-axis-in-the-pediatric-population-a-series-of-eight-patients
#18
Bhishampal Singh, Andrew Cree
BACKGROUND CONTEXT: Instability of the atlantoaxial spine is a recognized problem in children. Safe passage of pedicle screws at C2 poses challenges because of the proximity to the vertebral artery, size of the pedicles, and variations in the location of the foramen transversarium. PURPOSE: The C2 translaminar technique is a useful option and its stability is comparable to that offered by C2 pedicle screws. In this follow-up from our previously published study, we wanted to verify the safety and suitability of the C2 laminar screw in the treatment of cervical instability in the pediatric population...
February 1, 2015: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/25463396/blunt-cerebrovascular-injuries-in-association-with-craniocervical-distraction-injuries-a-retrospective-review-of-consecutive-cases
#19
Marcelo D Vilela, Louis J Kim, Carlo Bellabarba, Richard J Bransford
BACKGROUND CONTEXT: Blunt cerebrovascular injuries (BCVIs) have the potential to cause brain, cerebellar, and/or spinal cord ischemia. Certain subtypes of spine fractures, such as vertebral subluxation, fractures through the foramen transversarium, and C1-C3 fractures have been linked to a higher incidence of BCVI. On the other hand, BCVI in association with craniocervical distraction injuries (CCDs) have been only anecdotally reported. PURPOSE: We hypothesized that because CCD is also caused by a high-energy hyperflexion/hyperextension distraction mechanism, it could also be associated with a high incidence of BCVI...
March 1, 2015: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/25341994/safety-eevaluation-of-free-hand-lateral-mass-screw-fixation-in-the-subaxial-cervical-spine-evaluation-of-1256-screws
#20
Hak-Suk Kim, Kyung-Soo Suk, Seong-Hwan Moon, Hwan-Mo Lee, Kyung-Chung Kang, Sang-Hun Lee, Jin-Soo Kim
Study Design. Prospective studyObjective. To evaluate the safety of the lateral mass screw (LMS) fixation.Summary of Background Data. LMS fixation has been known to have risk of injury to vertebral artery, nerve root, or facet joints.Methods. A consecutive series of 178 patients undergoing planned LMS fixation were studied. Screw fixation was performed by free hand technique. Entry point of screws was 2mm medial from the center of the lateral mass. Planned divergent angle of the screw was 30 degrees. Bicortical fixation was tried in all cases...
November 7, 2014: Spine
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