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Spinal anatomy

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https://www.readbyqxmd.com/read/27933423/how-effective-is-embolization-with-n-2-butyl-cyanoacrylate-for-aneurysmal-bone-cysts
#1
Giuseppe Rossi, Andreas F Mavrogenis, Giancarlo Facchini, Tommaso Bartalena, Eugenio Rimondi, Matteo Renzulli, Andrea Andreone, Stefano Durante, Andrea Angelini, Costantino Errani
PURPOSE: To evaluate the outcome of selective arterial embolization with N-2-butyl-cyanoacrylate for aneurysmal bone cysts. METHODS: We retrospectively studied 102 patients (72 male, 30 female; mean age, 16 years; range, 3-60 years) with aneurysmal bone cysts treated with embolization with N-2-butyl-cyanoacrylate. Mean follow-up was seven years (range, 3-13 years); no patient was lost to follow-up. We evaluated healing and recurrences of the lesions, complications and cost of the procedures, and recurrences with respect to age and gender of the patients, and size and location of the lesions...
December 8, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27932511/ascending-and-descending-thoracic-vertebral-arteries
#2
P Gailloud, L Gregg, M S Pearl, D San Millan
Thoracic vertebral arteries are anastomotic chains similar to cervical vertebral arteries but found at the thoracic level. Descending thoracic vertebral arteries originate from the pretransverse segment of the cervical vertebral artery and curve caudally to pass into the last transverse foramen or the first costotransverse space. Ascending thoracic vertebral arteries originate from the aorta, pass through at least 1 costotransverse space, and continue cranially as the cervical vertebral artery. This report describes the angiographic anatomy and clinical significance of 9 cases of descending and 2 cases of ascending thoracic vertebral arteries...
December 8, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27927507/sacral-alar-iliac-fixation-in-pediatric-deformity-radiographic-outcomes-and-complications
#3
Amit Jain, Khaled M Kebaish, Paul D Sponseller
STUDY DESIGN: Retrospective case series. OBJECTIVES: To assess the radiographic outcomes and complications of sacral-alar-iliac (SAI) fixation in children. SUMMARY OF BACKGROUND DATA: Pelvic fixation in children undergoing spinal deformity surgery can be challenging because of complex anatomy, compound biomechanical forces at the lumbosacral junction, and poor bone quality. METHODS: Radiographic and clinical records of 80 consecutive patients aged 18 years or younger who underwent posterior spinal fusion surgery with SAI fixation by one pediatric orthopedic surgeon and who had a minimum 2 years of follow-up (mean follow-up: 3...
May 2016: Spine Deformity
https://www.readbyqxmd.com/read/27927501/morphometric-analysis-of-the-thoracic-intervertebral-foramen-osseous-anatomy-in-adolescent-idiopathic-scoliosis-using-low-dose-computed-tomography
#4
Thorbjorn J Loch-Wilkinson, Maree T Izatt, Robert D Labrom, Geoffrey N Askin, Mark J Pearcy, Clayton J Adam
PURPOSE: The dimensions of the thoracic intervertebral foramen in adolescent idiopathic scoliosis (AIS) have not previously been quantified. Better understanding of the dimensions of the foramen may be useful in surgical planning. This study describes a reproducible method for measurement of the thoracic foramen in AIS using computed tomography (CT). METHODS: In 23 preoperative female patients with Lenke 1 type AIS with right-side convexity major curves confined to the thoracic spine the foraminal height (FH), foraminal width (FW), pedicle to superior articular process distance (P-SAP), and cross-sectional foraminal area (FA) were measured using multiplanar reconstructed CT...
May 2016: Spine Deformity
https://www.readbyqxmd.com/read/27902634/the-surgical-treatment-of-spinal-deformity-in-children-with-myelomeningocele-the-role-of-personalized-three-dimensional-printed-models
#5
Lawrence Karlin, Peter Weinstock, Daniel Hedequist, Sanjay P Prabhu
This study was carried out to evaluate the benefits of personalized three-dimensional printing as an aid to the performance of surgery for the correction of spinal deformity in children with myelomeningocele. We performed a retrospective review to include all such children for whom personalized three-dimensional spine models were used for surgical planning (group A) and compared them through subjective and objective criteria to a similar group that had no models (group B). The seven children in group A were younger and had more complex deformities than the 10 children in group B...
December 6, 2016: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/27900714/is-there-asymmetry-between-the-concave-and-convex-pedicles-in-adolescent-idiopathic-scoliosis-a-ct-investigation
#6
Colin M Davis, Caroline A Grant, Mark J Pearcy, Geoffrey N Askin, Robert D Labrom, Maree T Izatt, Clayton J Adam, J Paige Little
BACKGROUND: Adolescent idiopathic scoliosis is a complex three-dimensional deformity of the spine characterized by deformities in the sagittal, coronal, and axial planes. Spinal fusion using pedicle screw instrumentation is a widely used method for surgical correction in severe (coronal deformity, Cobb angle > 45°) adolescent idiopathic scoliosis curves. Understanding the anatomic difference in the pedicles of patients with adolescent idiopathic scoliosis is essential to reduce the risk of neurovascular or visceral injury through pedicle screw misplacement...
November 29, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27896519/image-guidance-technology-and-the-surgical-resection-of-spinal-column-tumors
#7
REVIEW
Bhargav Desai, Jonathan Hobbs, Grant Hartung, Guoren Xu, Ziya L Gokaslan, Andreas Linninger, Ankit I Mehta
Precision imaging is paramount to achieving success in surgical resection of many spinal tumors, whether the goal involves guiding a surgical cure for primary tumors or improving neurological decompression for metastatic lesions. Pre-operatively, image visualization is intimately involved with defining a clear target and surgical planning. Intra-operatively, image-guidance technology allows for surgeons to maximize the probability for gross total resection of spinal cord tumors and minimize damage to adjacent structures...
November 28, 2016: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/27891032/clinical-anatomy-and-significance-of-the-thoracic-intervertebral-foramen-a-cadaveric-study-and-review-of-the-literature
#8
Grigorios Gkasdaris, Grigorios Tripsianis, Konstantinos Kotopoulos, Stylianos Kapetanakis
INTRODUCTION: The literature is lacking information on the anatomy and the osseous dimensions of the thoracic intervertebral foramen (IVF). We describe the anatomy of the broader area, and we proceed with morphometric data of the vertebrae and the foramina. Depiction of these features is provided with imaging and illustrations. The purpose of this paper is to survey and present the anatomy of the foramen as a whole and provide baseline statistical data. MATERIALS AND METHODS: We review relevant literature, and we present data obtained from skeletal samples of known population and sex...
October 2016: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/27890761/the-coexistence-of-extradural-arteriovenous-fistula-and-soft-tissue-arteriovenous-malformation-within-the-same-metamere
#9
Nobuhiko Arai, Takenori Akiyama, Kazunari Yoshida
BACKGROUND: -Spinal arteriovenous shunts are a common spinal vascular disorder. However, they can have a misleading clinical presentation and poor prognosis. They are classified into 4 types according to shunt points and drainage route, among which extradural arteriovenous fistula (eAVF) is the most rare, comprising only 1% of all spinal arteriovenous shunts. Here, we report an extremely rare case of coexistent eAVF at the craniocervical junction and soft tissue arteriovenous malformation (AVM) within the same metamere...
November 24, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27886885/classification-and-management-of-pediatric-subaxial-cervical-spine-injuries
#10
REVIEW
Casey J Madura, James M Johnston
Appropriate management of subaxial spine injury in children requires an appreciation for the differences in anatomy, biomechanics, injury patterns, and treatment options compared with adult patients. Increased flexibility, weak neck muscles, and cranial disproportion predispose younger children to upper cervical injuries and spinal cord injury without radiographic abnormality. A majority of subaxial cervical spine injuries can be treated nonoperatively. Surgical instrumentation options for children have significantly increased in recent years...
January 2017: Neurosurgery Clinics of North America
https://www.readbyqxmd.com/read/27886881/central-cord-syndrome
#11
REVIEW
Nathaniel P Brooks
Central cord syndrome is a common spinal cord injury. The purpose of this review article is to provide an overview of the anatomy, pathophysiology, prognosis, and management of this disorder.
January 2017: Neurosurgery Clinics of North America
https://www.readbyqxmd.com/read/27870618/spinal-injections-for-pain-management
#12
William E Palmer
Image-guided spinal injection is commonly performed in symptomatic patients to decrease pain severity, confirm the pain generator, and delay or avoid surgery. This article focuses on the radiologist as spine interventionist and addresses the following four topics relevant to the radiologist who performs corticosteroid injections for pain management: (a) the rationale behind corticosteroid injection, (b) the interaction with patients, (c) the role of imaging in procedural selection and planning, and (d) the pearls and pitfalls of fluoroscopically guided injections...
December 2016: Radiology
https://www.readbyqxmd.com/read/27857455/imaging-in-spinal-posterior-epidural-space-lesions-a-pictorial-essay
#13
Foram B Gala, Yashant Aswani
Spinal epidural space is a real anatomic space located outside the dura mater and within the spinal canal extending from foramen magnum to sacrum. Important contents of this space are epidural fat, spinal nerves, epidural veins and arteries. Due to close proximity of posterior epidural space to spinal cord and spinal nerves, the lesions present with symptoms of radiculopathy and/or myelopathy. In this pictorial essay, detailed anatomy of the posterior epidural space, pathologies affecting it along with imaging pearls to accurately diagnose them are discussed...
July 2016: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/27844258/surface-anatomical-landmarks-for-the-location-of-posterior-sacral-foramina-in-sacral-nerve-stimulation
#14
A Povo, M Arantes, K E Matzel, J Barbosa, M A Ferreira, D Pais, A Rodríguez-Baeza
BACKGROUND: Sacral nerve stimulation is a common treatment for various pelvic floor disorders. It consists of the percutaneous introduction of electrodes through the posterior sacral foramina for therapeutic stimulation of the target sacral spinal nerve. The aim of our study was to determine the surface anatomical landmarks of the sacrum to facilitate identification of the posterior sacral foramina. METHODS: This study was conducted on 20 human cadavers. The cadavers were placed in a prone position, and all the soft tissues of the sacral region were removed to allow exposure of the osseous structures...
November 14, 2016: Techniques in Coloproctology
https://www.readbyqxmd.com/read/27831994/pseudarthrosis-repair-using-autologous-cultured-osteoblasts-in-complex-type-1-neurofibromatosis-spinal-deformity-a-case-report-and-review-of-the-literature
#15
Young-Hoon Kim, Genriech N Reoyan, Kee-Yong Ha, Chul-Kyu Kim
STUDY DESIGN: A case report and literature review. OBJECTIVE: To report a late dislocation of the vertebra caused by progressive dural ectasia combined with type-1 neurofibromatosis (NF-1) and the clinical results of pseudarthrosis repairs using autologous cultured osteoblasts. SUMMARY OF BACKGROUND DATA: NF-1 is a well-known genetic disorder that is commonly characterized by spinal deformities including kyphoscoliosis. Late dislocation of the vertebra resulting from progressive dural ectasia after surgical correction of NF-1 scoliosis is a very rare occurrence, and pseudarthrosis frequently develops after surgical intervention for this complex spinal deformity...
November 15, 2016: Spine
https://www.readbyqxmd.com/read/27827521/ultrasonography-for-neuraxial-blocks-a-review-of-the-evidence
#16
Maria F Elgueta, Silvia Duong, Roderick J Finlayson, De Qh Tran
INTRODUCTION: This narrative review summarizes the evidence derived from randomized controlled trials (RCTs) pertaining to the use of adjunctive ultrasonography (US) for neuraxial blocks. EVIDENCE ACQUISITION: The literature search was conducted using the MEDLINE, EMBASE and PUBMED databases. For the MEDLINE and EMBASE searches, the MESH terms "ultrasonography" and key word "ultrasound" were queried; using the operator "and", they were combined with the MESH terms "neuraxial block", "epidural anesthesia", "epidural analgesia", "spinal anesthesia", "spinal analgesia", "intrathecal anesthesia", "intrathecal analgesia", "caudal anesthesia", and "caudal analgesia"...
November 9, 2016: Minerva Anestesiologica
https://www.readbyqxmd.com/read/27815845/the-craniocervical-junction-embryology-anatomy-biomechanics-and-imaging-in-blunt-trauma
#17
REVIEW
Curtis Edward Offiah, Emily Day
: Imaging of the blunt traumatic injuries to the craniocervical junction can be challenging but central to improving morbidity and mortality related to such injury. The radiologist has a significant part to play in the appropriate management of patients who have suffered injury to this vital junction between the cranium and the spine. Knowledge of the embryology and normal anatomy as well as normal variant appearances avoids inappropriate investigations in these trauma patients. Osseous injury can be subtle while representing important radiological red flags for significant underlying ligamentous injury...
November 4, 2016: Insights Into Imaging
https://www.readbyqxmd.com/read/27811396/performance-evaluation-of-mind-demons-deformable-registration-of-mr-and-ct-images-in-spinal-interventions
#18
S Reaungamornrat, T De Silva, A Uneri, J Goerres, M Jacobson, M Ketcha, S Vogt, G Kleinszig, A J Khanna, J-P Wolinsky, J L Prince, J H Siewerdsen
Accurate intraoperative localization of target anatomy and adjacent nervous and vascular tissue is essential to safe, effective surgery, and multimodality deformable registration can be used to identify such anatomy by fusing preoperative CT or MR images with intraoperative images. A deformable image registration method has been developed to estimate viscoelastic diffeomorphisms between preoperative MR and intraoperative CT using modality-independent neighborhood descriptors (MIND) and a Huber metric for robust registration...
December 7, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27806593/effect-of-atelectasis-changes-on-tissue-mass-and-dose-during-lung-radiotherapy
#19
Christopher L Guy, Elisabeth Weiss, Nuzhat Jan, Leonid B Reshko, Gary E Christensen, Geoffrey D Hugo
PURPOSE: To characterize mass and density changes of lung parenchyma in non-small cell lung cancer (NSCLC) patients following midtreatment resolution of atelectasis and to quantify the impact this large geometric change has on normal tissue dose. METHODS: Baseline and midtreatment CT images and contours were obtained for 18 NSCLC patients with atelectasis. Patients were classified based on atelectasis volume reduction between the two scans as having either full, partial, or no resolution...
November 2016: Medical Physics
https://www.readbyqxmd.com/read/27799905/cerebellar-and-spinal-direct-current-stimulation-in-children-computational-modeling-of-the-induced-electric-field
#20
Serena Fiocchi, Paolo Ravazzani, Alberto Priori, Marta Parazzini
Recent studies have shown that the specific application of transcranial direct current stimulation (tDCS) over the cerebellum can modulate cerebellar activity. In parallel, transcutaneous spinal DC stimulation (tsDCS) was found to be able to modulate conduction along the spinal cord and spinal cord functions. Of particular interest is the possible use of these techniques in pediatric age, since many pathologies and injuries, which affect the cerebellar cortex as well as spinal cord circuits, are diffuse in adults as well as in children...
2016: Frontiers in Human Neuroscience
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