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https://www.readbyqxmd.com/read/28329748/extensive-multilevel-split-laminotomy-for-debulking-a-cervicothoracolumbar-nondysraphic-intramedullary-spinal-cord-lipoma-in-a-2-month-old-infant
#1
Ha Son Nguyen, Sean Lew
INTRODUCTION: Laminectomy is the traditional approach for posterior exposure of the spinal canal for tumor resection. Another technique is split laminotomy, which entails the division and retraction of the spinous processes and laminae to access the thecal sac. This technique has been employed for small-segment exposures, but not extensively explored for long-segment exposures. CASE: A 2-month-old male presented with progressive right-leg plegia. MRI of the spine revealed a large, intramedullary spinal-cord lipoma extending from C6 to L5...
March 23, 2017: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28328849/protrusion-of-a-rod-into-the-spinal-canal-10-years-after-segmental-lumbar-spine-surgery
#2
Siyi Cai, Xiangyi Kong, Chengrui Yan, Yipeng Wang, Xueshuai Wan, Jialu Zhang, Guixing Qiu, Keyi Yu
The objective of this article is to report an unusual case of a spinal rod that protruded into the spinal canal after lumbar spine surgery.Only 4 cases of spinal rod migration with protrusion into the spinal canal have been reported. This is the first report of a case involving the use of posterior low lumbar segmental instrumentation with a screw-rod system. The left side of the rod gradually migrated and finally protruded into the canal and compressed the cord.A 60-year-old woman presented with pain and numbness of the posterior aspect of the left leg after a long-distance walk...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28327433/sonographic-prediction-of-outcome-of-vacuum-deliveries-a-multicenter-prospective-cohort-study
#3
Birgitte H Kahrs, Sana Usman, Tullio Ghi, Aly Youssef, Erik A Torkildsen, Elsa Lindtjørn, Tilde B Østborg, Sigurlaug Benediktsdottir, Lis Brooks, Lotte Harmsen, Pål R Romundstad, Kjell Å Salvesen, Christoph C Lees, Torbjørn M Eggebø
BACKGROUND: Safe management of the second stage of labor is of great importance. Unnecessary interventions should be avoided and correct timing of interventions focused. Ultrasound assessment of fetal position and station has a potential to improve the precision in diagnosing and managing prolonged or arrested labors. The decision to perform vacuum delivery is traditionally based on subjective assessment by digital vaginal examination and clinical expertise and there is currently no method of objectively quantifying the likelihood of successful delivery...
March 18, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28326929/dendritic-spine-dysgenesis-in-superficial-dorsal-horn-sensory-neurons-after-spinal-cord-injury
#4
Xiaoyu C Cao, Laura W Pappalardo, Stephen G Waxman, Andrew M Tan
Neuropathic pain is a major complication of spinal cord injury, and despite aggressive efforts, this type of pain is refractory to available clinical treatment. Our previous work has demonstrated a structure-function link between dendritic spine dysgenesis on nociceptive sensory neurons in the intermediate zone, laminae IV/V, and chronic pain in central nervous system and peripheral nervous system injury models of neuropathic pain. To extend these findings, we performed a follow-up structural analysis to assess whether dendritic spine remodeling occurs on superficial dorsal horn neurons located in lamina II after spinal cord injury...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28324978/influence-of-electrode-configuration-on-the-electric-field-distribution-during-transcutaneous-spinal-direct-current-stimulation-of-the-cervical-spine
#5
Sofia R Fernandes, Ricardo Salvador, Cornelia Wenger, Mamede A de Carvalho, Pedro C Miranda
Transcutaneous spinal direct current stimulation (tsDCS) is a recent technique with promising neuromodulatory effects on spinal neuronal circuitry. The main objective of the present study was to perform a finite element analysis of the electric field distribution in tsDCS in the cervical spine region, with varying electrode configurations and geometry. A computational model of a human trunk was generated with nine tissue meshes. Three electrode configurations were tested: A) rectangular saline-soaked sponge target and return electrodes placed over C3 and T3 spinous processes, respectively; B1) circular saline-soaked sponge target and return electrodes placed over C7 spinous process and right deltoid muscle, respectively; B2) same configuration as B1, considering circular shaped electrodes with sponge and rubber layers and a small circular connector on the top surface...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28322758/increased-seat-dump-angle-in-a-manual-wheelchair-is-associated-with-changes-in-thoracolumbar-lordosis-and-scapular-kinematics-during-propulsion
#6
Beth A Cloud, Kristin D Zhao, Arin M Ellingson, Ahmad Nassr, Anthony J Windebank, Kai-Nan An
OBJECTIVE: To quantify and compare spinal curvature and shoulder kinematics throughout the manual wheelchair propulsion cycle for individuals with spinal cord injury (SCI) who were seated at 2 different seat dump angles. DESIGN: Single-group, repeated-measures study. SETTING: Academic medical center. PARTICIPANTS: Twenty-eight individuals completed the telephone screening; 21 were eligible and completed the study. INTERVENTIONS: Participants' personal manual wheelchairs were modified to have seat dump angles of 0° or 14°, with a vertical backrest...
March 18, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28322477/impact-of-insurance-provider-on-overall-costs-in-failed-back-surgery-syndrome-a-cost-study-of-122-827-patients
#7
Aladine A Elsamadicy, Samuel Harrison Farber, Siyun Yang, Syed Mohammed Qasim Hussaini, Kelly R Murphy, Amanda Sergesketter, Carter M Suryadevara, Promila Pagadala, Beth Parente, Jichun Xie, Shivanand P Lad
OBJECTIVES: Failed back surgery syndrome (FBSS) affects 40% of patients following spine surgery with estimated costs of $20 billion to the US health care system. The aim of this study was to assess the cost differences across the different insurance providers for FBSS patients. METHODS: A retrospective longitudinal study was performed using the Truven MarketScan(®) database to identify FBSS patients from 2001 to 2012. Patients were grouped into Commercial, Medicaid, or Medicare cohorts...
March 21, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28321901/a-pneumatic-phantom-for-mimicking-respiration-induced-artifacts-in-spinal-mri
#8
Philippe De Tillieux, Ryan Topfer, Alexandru Foias, Iris Leroux, Imanne El Maâchi, Hugues Leblond, Nikola Stikov, Julien Cohen-Adad
PURPOSE: To design a phantom capable of mimicking human respiration to serve as a testing platform for correction of the static and time-evolving magnetic field distortions typically encountered in MRI of the spinal cord. METHODS: An inflation system to mimic the air variation of the human lungs was constructed. The inflation system was linked to a phantom containing synthetic lungs and an ex vivo human spine. The relationship between air pressure and phantom lung volume was evaluated via imaging experiment...
March 20, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28317557/the-role-of-allometry-and-posture-in-the-evolution-of-the-hominin-subaxial-cervical-spine
#9
Mikel Arlegi, Asier Gómez-Olivencia, Lou Albessard, Ignacio Martínez, Antoine Balzeau, Juan Luis Arsuaga, Ella Been
Cervical vertebrae not only protect the spinal cord but also are the insertion and origin points for muscles related to the movement of the head, upper limb, and trunk, among others, and are thus important elements in primate evolution. While previous work has been undertaken on the first two cervical vertebrae, there is a dearth of studies on the subaxial cervical spine in hominines. In this paper, we provide detailed morphological information on two important aspects of the subaxial cervical vertebrae (C3 - C7): mid-sagittal morphology and superior facet orientation...
March 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28317555/the-cervical-spine-of-australopithecus-sediba
#10
Marc R Meyer, Scott A Williams, Peter Schmid, Steven E Churchill, Lee R Berger
Cervical vertebrae are rare in the early hominin fossil record, presenting a challenge for understanding the evolution of the neck and head carriage in hominin evolution. Here, we examine the cervical vertebrae of Australopithecus sediba, which unlike other South African taxa is known from associated cervical vertebrae. The A. sediba cervical vertebrae exhibit human-like values for wedging, pedicle cross-sectional areas, and articular facet heights, indicating reduced ventral loading relative to African apes...
March 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28317447/intraspinal-bronchogenic-cyst-series-of-case-reports-and-literature-review
#11
Xueying Ma, Wenfei Li, Chen Niu, Fengli Liang, Liping Guo, Tahir Mehmood Shakir, Ming Zhang
PURPOSE: Spinal bronchogenic cysts (SBCs) are rare congenital lesions. The clinical and imaging characteristics and treatment of SBCs are not well known. We studied three cases of SBCs retrospectively, which were registered in our department and analyzed eight case reports which were all published in English, focusing on providing a deeper knowledge of SBCs. METHODS: Three patients with SBCs registered in our department were retrospectively reviewed. Eight reported SBCs cases published from 1992 to 2015 were enrolled in our study...
March 20, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28315801/use-of-indocyanine-green-fluorescence-endoscopy-to-treat-concurrent-perimedullary-and-dural-arteriovenous-fistulas-in-the-cervical-spine
#12
Akira Ito, Toshiki Endo, Tomoo Inoue, Hidenori Endo, Kenichi Sato, Teiji Tominaga
BACKGROUND: Intraoperative microscopic fluorescence angiography using indocyanine green (ICG) provides visual information on real-time blood flow. However, this method cannot be applied for lesions that are not visible under microscopic imaging because excitation light does not reach the targeted vascular structures. Endoscope-integrated ICG video-angiography has recently been advocated to compensate for this limitation. This is the first reported case of a spinal arteriovenous malformation in which endoscope-integrated ICG video-angiography was successfully used...
March 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28306628/pediatric-spinal-cord-injury-without-radiographic-abnormality-in-the-era-of-advanced-imaging
#13
Caitlin A Farrell, Megan Hannon, Lois K Lee
PURPOSE OF REVIEW: The current review describes the current evidence on pediatric spinal cord injury without radiographic abnormality (SCIWORA) with attention to the definition, epidemiology, and clinical presentation of the condition, as well as common MRI findings, management strategies, and outcomes. RECENT FINDINGS: Recent literature demonstrates that with more widespread MRI use, our understanding of SCIWORA has improved. The new literature, although still limited, provides a more granular conceptualization of patterns of injury as well as potential prognostic stratification of patients based on MRI findings...
March 16, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28304240/posterior-arch-c-1-screw-technique-a-cadaveric-comparison-study
#14
Marc Moisi, Christian Fisahn, Lara Tkachenko, Shiveindra Jeyamohan, Stephen Reintjes, Peter Grunert, Daniel C Norvell, R Shane Tubbs, Jeni Page, David W Newell, Peter Nora, Rod J Oskouian, Jens Chapman
OBJECTIVE Posterior atlantoaxial stabilization and fusion using C-1 lateral mass screw fixation has become commonly used in the treatment of instability and for reconstructive indications since its introduction by Goel and Laheri in 1994 and modification by Harms in 2001. Placement of such lateral mass screws can be challenging because of the proximity to the spinal cord, vertebral artery, an extensive venous plexus, and the C-2 nerve root, which overlies the designated starting point on the posterior center of the lateral mass...
March 17, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28304101/the-value-of-prenatal-ultrasonographic-diagnosis-of-diastematomyelia
#15
Qiuju Wei, Ailu Cai, Xintian Wang, Xiaoguang Wang, Limei Xie
OBJECTIVES: To evaluate the value of prenatal ultrasonographic diagnosis of diastematomyelia, and to provide a basis for the diagnosis and differential diagnosis of fetal diastematomyelia. METHODS: Four fetuses with suspected diastematomyelia based on prenatal ultrasonography are presented. Detailed prenatal ultrasonography was performed to examine spinal cord abnormalities. The region of interest-based spine sagittal plane was defined and 3D volumetric scans were performed, as needed...
March 17, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28299213/cervical-spinal-cord-compression-a-rare-presentation-of-hepatocellular-carcinoma
#16
Puvanalingam Ayyadurai, Kanthi Rekha Badipatla, Chukwunonso Chime, Shiva Arjun, Pavithra Reddy, Masooma Niazi, Suresh Kumar Nayudu
Hepatocellular carcinoma (HCC) is the most common primary malignancy of liver. Distant metastasis to various organs is well known. Skeletal metastasis is also reported to various locations. Vertebral metastasis has been reported mostly to thoracic spine. However, cervical spinal cord involvement leading to cord compression has been reported very rarely in literature. We present a case of 58-year-old male with liver cirrhosis presenting as neck pain. Further work-up revealed metastatic HCC to cervical spinal cord resulting in acute cord compression...
2017: Case Reports in Hepatology
https://www.readbyqxmd.com/read/28298841/etiological-profile-of-noncompressive-myelopathies-in-a-tertiary-care-hospital-of-northeast-india
#17
Ashok Kumar Kayal, Munindra Goswami, Marami Das, Lakhshya Jyoti Basumatary, Suvorit Subhas Bhowmick, Baiakmenlang Synmon
BACKGROUND: The discovery of antibodies against aquaporin-4 and evolving concepts of noncompressive myelopathies in the 21(st) century have made a major impact on the etiological profile of these diseases, with few cases turning out to be idiopathic. OBJECTIVE: To find causes of noncompressive myelopathy in a tertiary care hospital of Northeast India. MATERIALS AND METHODS: An observational study was carried out in the Neurology Department of Gauhati Medical College, Guwahati, from September 2013 to February 2016...
January 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/28298579/computed-tomography-of-thoracolumbar-spine-trauma
#18
Teresa G Odle
Thoracolumbar spine trauma typically occurs when high-energy forces damage bony and ligamentous spinal structures and, in severe cases, the spinal cord. These injuries often cause considerable neurological deficits as a result of the damage. Computed tomography (CT) is the imaging method of choice for determining injury severity in most victims of multiple trauma. In addition to describing various types of thoracolumbar trauma, this article discusses the role of CT in emergency diagnosis and management of thoracolumbar injuries...
January 2017: Radiologic Technology
https://www.readbyqxmd.com/read/28297335/on-the-accuracy-of-dose-prediction-near-metal-fixation-devices-for-spine-sbrt
#19
Zhangkai J Cheng, Regina M Bromley, Brad Oborn, Martin Carolan, Jeremy T Booth
The metallic fixations used in surgical procedures to support the spine mechanically usually consist of high-density materials. Radiation therapy to palliate spinal cord compression can include prophylactic inclusion of potential tumor around the site of such fixation devices. Determination of the correct density and shape of the spine fixation device has a direct effect on the dose calculation of the radiation field. Even with the application of modern computed tomography (CT), under- or overestimation of dose, both immediately next to the device and in the surrounding tissues, can occur due to inaccuracies in the dose prediction algorithm...
May 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28296953/a-numerical-investigation-of-intrathecal-isobaric-drug-dispersion-within-the-cervical-subarachnoid-space
#20
Per Thomas Haga, Giulia Pizzichelli, Mikael Mortensen, Miroslav Kuchta, Soroush Heidari Pahlavian, Edoardo Sinibaldi, Bryn A Martin, Kent-Andre Mardal
Intrathecal drug and gene vector delivery is a procedure to release a solute within the cerebrospinal fluid. This procedure is currently used in clinical practice and shows promise for treatment of several central nervous system pathologies. However, intrathecal delivery protocols and systems are not yet optimized. The aim of this study was to investigate the effects of injection parameters on solute distribution within the cervical subarachnoid space using a numerical platform. We developed a numerical model based on a patient-specific three dimensional geometry of the cervical subarachnoid space with idealized dorsal and ventral nerve roots and denticulate ligament anatomy...
2017: PloS One
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