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https://www.readbyqxmd.com/read/28424013/anterior-spinal-artery-aneurysm-in-aortic-stenosis-of-different-etiology-report-of-three-cases
#1
Vivek Singh, Suprava Naik, Sanjeev K Bhoi, R V Phadke
Isolated aneurysms of spinal arteries are rare. Spinal artery aneurysms are commonly found in association with spinal cord arteriovenous malformation and coarctation of aorta and rarely with aortic arch interruption and Klippel-Trenaunay syndrome. Spinal angiograms are the gold standard for diagnosing these spinal artery aneurysms but with the advances in computed tomography technology these aneurysms can also be very well demonstrated in computed tomography angiograms. We describe three cases of anterior spinal artery aneurysm, those are flow related aneurysms, associated with coarctation of aorta and with Takayasu arteritis...
April 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28413945/body-machine-interface-enables-people-with-cervical-spinal-cord-injury-to-control-devices-with-available-body-movements-proof-of-concept
#2
Farnaz Abdollahi, Ali Farshchiansadegh, Camilla Pierella, Ismael Seáñez-González, Elias Thorp, Mei-Hua Lee, Rajiv Ranganathan, Jessica Pedersen, David Chen, Elliot Roth, Maura Casadio, Ferdinando Mussa-Ivaldi
This study tested the use of a customized body-machine interface (BoMI) for enhancing functional capabilities in persons with cervical spinal cord injury (cSCI). The interface allows people with cSCI to operate external devices by reorganizing their residual movements. This was a proof-of-concept phase 0 interventional nonrandomized clinical trial. Eight cSCI participants wore a custom-made garment with motion sensors placed on the shoulders. Signals derived from the sensors controlled a computer cursor. A standard algorithm extracted the combinations of sensor signals that best captured each participant's capacity for controlling a computer cursor...
May 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28412561/metastatic-human-breast-cancer-to-the-spine-produces-mechanical-hyperalgesia-and-gait-deficits-in-rodents
#3
Rachel Sarabia-Estrada, Alejandro Ruiz-Valls, Hugo Guerrero-Cazares, Ana M Ampuero, Ismael Jimenez-Estrada, Samantha De Silva, Lydia J Bernhardt, C Rory Goodwin, A Karim Ahmed, Yuxin Li, Neil A Phillips, Ziya L Gokaslan, Alfredo Quiñones-Hinojosa, Daniel M Sciubba
BACKGROUND CONTEXT: Metastases to the spine are a common source of severe pain in cancer patients. The secondary effects of spinal metastases include pain, bone fractures, hypercalcemia, and neurological deficits. As the disease progresses, pain severity can increase until it becomes refractory to medical treatments and leads to a decreased quality of life for patients. A key obstacle in the study of pain-induced spinal cancer is the lack of reliable and reproducible spine cancer animal models...
April 13, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28410685/evaluation-of-mesh-and-binary-based-contour-propagation-methods-in-4d-thoracic-radiotherapy-treatments-using-patient-4d-ct-images
#4
Yuanyuan Ma, Xinguo Liu, Zhongying Dai, Pengbo He, Yuanlin Yan, Guosheng Shen, Ping Yuan, Qiang Li
Based on four dimensional (4D) computed tomography (CT) images, mesh- and binary-based contour propagation algorithms for 4D thoracic radiotherapy treatments were evaluated. Gross tumor volumes (GTVs), lungs, hearts and spinal cords on the CT images at the end-exhale and end-inhale phases for six patients were delineated by the physician. All volumes of interest (VOIs) were automatically propagated from the end-exhale phase to the end-inhale phase using two propagation methods. The propagated VOIs were quantitatively compared with the VOIs contoured at the end-inhale phase by the physician using Dice Similarity Coefficient (DSC), Mean Slicewise Hausdorff Distance (MSHD), Center Of Mass (COM) displacement and volume difference...
April 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28407704/delayed-epidural-mucin-collection-after-surgery-for-spinal-metastatic-pancreatic-adenocarcinoma
#5
Dong Ha Kim, Dong Hwan Kim, Hwan Soo Kim, Kyoung Hyup Nam, Byung Kwan Choi, In Ho Han
A rare case of delayed large epidural mucin collection causing neurologic deficit after surgery for metastatic pancreatic cancer is reported. A 65-year-old man presented with intractable upper-thoracic back pain radiating to the chest and gait disturbance. He had a history of subtotal pancreatectomy due to intraductal papillary mucinous neoplasm (IPMN) of the pancreas and concurrent chemotherapy. Eight months after pancreatectomy, multiple thoracic spinal metastasis was diagnosed with routine up positron emission tomography-computed tomography...
March 2017: Korean Journal of Spine
https://www.readbyqxmd.com/read/28391383/percutaneous-radiofrequency-ablation-for-spinal-osteoid-osteoma-and-osteoblastoma
#6
Ben Wang, Song Bo Han, Liang Jiang, Hui Shu Yuan, Chen Liu, Bin Zhu, Zhong Jun Liu, Xiao Guang Liu
PURPOSES: We sought to verify the efficacy and safety of RFA in spinal OO and osteoblastomas (OB) (Enneking Stage 2, S2). METHODS: We retrospectively reviewed patients treated in our hospital. Surgical resection was indicated for Enneking Stage 3 OB. RFA indications for spinal OO and OB (S2) were no neurological deficits, complete bone cortex around the lesion on computed tomography (CT), and cerebrospinal fluid between a lesion and the spinal cord/nerve root on magnetic resonance imaging...
April 8, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28386545/residual-spinal-cord-compression-following-hemilaminectomy-and-mini-hemilaminectomy-in-dogs-a-prospective-randomized-study
#7
Gustaf Svensson, Ulrika S H Simonsson, Fredrik Danielsson, Tobias Schwarz
The aim of this study was to compare the reduction of spinal cord compression after surgical treatment of dogs with acute thoracolumbar intervertebral disc (IVD) extrusion achieved using hemilaminectomy versus mini-hemilaminectomy techniques. This was a prospective randomized study with client-owned dogs presented with acute IVD extrusion that were allocated to surgical treatment using hemilaminectomy (n = 15) or mini-hemilaminectomy (n = 15) techniques. Plain and intravenous-contrast computed tomography was performed pre- and postoperatively...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28383432/atypical-spinal-tuberculosis-involved-noncontiguous-multiple-segments-case-series-report-with-literature-review
#8
Lin-Nan Wang, Lei Wang, Li-Min Liu, Yue-Ming Song, Yue Li, Hao Liu
In its typical form, spinal tuberculosis (TB) presents as destroyed contiguous vertebral bodies with involvement of intervertebral discs and paravertebral or psoas abscesses. Atypical forms are uncommonly reported. Here, we describe 8 patients with noncontiguous multisegmental spinal TB with no intervertebral disc involvement. From 2013 to 2014, we surgically treated 384 patients with spinal TB to relieve spinal cord compression, re-establish spinal stability, confirm the diagnosis, and debride the TB foci...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28379572/risk-factors-for-ineffectiveness-of-posterior-decompression-and-dekyphotic-corrective-fusion-with-instrumentation-for-beak-type-thoracic-ossification-of-the-posterior-longitudinal-ligament-a-single-institute-study
#9
Shiro Imagama, Kei Ando, Zenya Ito, Kazuyoshi Kobayashi, Tetsuro Hida, Kenyu Ito, Mikito Tsushima, Yoshimoto Ishikawa, Akiyuki Matsumoto, Masayoshi Morozumi, Satoshi Tanaka, Masaaki Machino, Kyotaro Ota, Hiroaki Nakashima, Norimitsu Wakao, Yoshihiro Nishida, Yukihiro Matsuyama, Naoki Ishiguro
BACKGROUND: Thoracic ossification of the posterior longitudinal ligament (T-OPLL) is treated surgically with instrumented posterior decompression and fusion. However, the factors determining the outcome of this approach and the efficacy of additional resection of T-OPLL are unknown. OBJECTIVE: To identify these factors in a prospective study at a single institution. METHODS: The subjects were 70 consecutive patients with beak-type T-OPLL who underwent posterior decompression and dekyphotic fusion and had an average of 4...
March 30, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28368982/spinal-cord-stimulation-in-chronic-pain-mode-of-action
#10
Ricardo Vallejo, Kerry Bradley, Leonardo Kapural
OBJECTIVE: A review of the literature that presents a perspective on mechanisms of actions behind spinal cord stimulation (SCS) therapy for chronic pain. SUMMARY OF BACKGROUND DATA: SCS is an effective therapeutic alternative for the treatment of intractable chronic pain. Its application has been mostly based on the Gate Control Theory (GCT) of pain. Computational models have been fundamental on the understanding of clinical observations and the design of therapies that provide optimal neuromodulation...
March 31, 2017: Spine
https://www.readbyqxmd.com/read/28366305/off-the-shelf-multibranched-endograft-for-urgent-endovascular-repair-of-thoracoabdominal-aortic-aneurysms
#11
Enrico Gallitto, Mauro Gargiulo, Antonio Freyrie, Rodolfo Pini, Chiara Mascoli, Stefano Ancetti, Gianluca Faggioli, Andrea Stella
OBJECTIVE: The aim of this paper was to report early and midterm results of endovascular repair of urgent thoracoabdominal aortic aneurysms (TAAAs) by the off-the-shelf multibranched Zenith t-Branch endograft (Cook Medical, Bloomington, Ind). METHODS: Between January 2014 and April 2016, all patients with urgent TAAAs (asymptomatic with diameter >8 cm, symptomatic, or ruptured TAAAs) and aortoiliac anatomic feasibility underwent endovascular repair by t-Branch and were prospectively enrolled...
March 30, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28366165/hepatitis-b-virus-induced-cytoplasmic-antineutrophil-cytoplasmic-antibody-mediated-vasculitis-causing-subarachnoid-hemorrhage-acute-transverse-myelitis-and-nephropathy-a-case-report
#12
Utsav Joshi, Roshan Subedi, Bikram Prasad Gajurel
BACKGROUND: Transverse myelitis, subarachnoid hemorrhage, and nephropathy are established but rare complications of hepatitis B virus infection that can potentially be triggered by an antibody-mediated vasculitis as a result of a viral infection. The following is a case report detailing a patient presenting with all three of the above presentations who is cytoplasmic antineutrophil cytoplasmic antibody-positive and a chronic carrier of hepatitis B. CASE PRESENTATION: A 33-year-old Nepalese man presented to our hospital with headache, swelling of his body, paraplegia, and back pain that developed over a period of 10 days...
April 3, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28366027/detecting-destabilizing-wheelchair-conditions-for-maintaining-seated-posture
#13
Anna Crawford, Kiley Armstrong, Kenneth Loparo, Musa Audu, Ronald Triolo
PURPOSE: The purpose of this study was to detect and classify potentially destabilizing conditions encountered by manual wheelchair users with spinal cord injuries (SCI) to dynamically increase stability and prevent falls. METHODS: A volunteer with motor complete T11 paraplegia repeatedly propelled his manual wheelchair over level ground and simulated destabilizing conditions including sudden stops, bumps and rough terrain. Wireless inertial measurement units attached to the wheelchair frame and his sternum recorded associated accelerations and angular velocities...
April 1, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28363483/restoration-of-reaching-and-grasping-movements-through-brain-controlled-muscle-stimulation-in-a-person-with-tetraplegia-a-proof-of-concept-demonstration
#14
A Bolu Ajiboye, Francis R Willett, Daniel R Young, William D Memberg, Brian A Murphy, Jonathan P Miller, Benjamin L Walter, Jennifer A Sweet, Harry A Hoyen, Michael W Keith, P Hunter Peckham, John D Simeral, John P Donoghue, Leigh R Hochberg, Robert F Kirsch
BACKGROUND: People with chronic tetraplegia, due to high-cervical spinal cord injury, can regain limb movements through coordinated electrical stimulation of peripheral muscles and nerves, known as functional electrical stimulation (FES). Users typically command FES systems through other preserved, but unrelated and limited in number, volitional movements (eg, facial muscle activity, head movements, shoulder shrugs). We report the findings of an individual with traumatic high-cervical spinal cord injury who coordinated reaching and grasping movements using his own paralysed arm and hand, reanimated through implanted FES, and commanded using his own cortical signals through an intracortical brain-computer interface (iBCI)...
March 28, 2017: Lancet
https://www.readbyqxmd.com/read/28363281/thoracic-spondylolisthesis-and-spinal-cord-compression-in-diffuse-idiopathic-skeletal-hyperostosis-a-case-report
#15
Yasutaka Takagi, Hiroshi Yamada, Hidehumi Ebara, Hiroyuki Hayashi, Takeshi Iwanaga, Kengo Shimozaki, Yoshiyuki Kitano, Kenji Kagechika, Hiroyuki Tsuchiya
BACKGROUND: Diffuse idiopathic skeletal hyperostosis has long been regarded as a benign asymptomatic clinical entity with an innocuous clinical course. Neurological complications are rare in diffuse idiopathic skeletal hyperostosis. However, if they do occur, the consequences are often significant enough to warrant major neurosurgical intervention. Neurological complications occur when the pathological process of ossification in diffuse idiopathic skeletal hyperostosis extends to other vertebral ligaments, causing ossification of the posterior longitudinal ligaments and/or ossification of the ligamentum flavum...
April 1, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28362188/spinal-column-shortening-for-tethered-cord-syndrome-associated-with-myelomeningocele-lumbosacral-lipoma-and-lipomyelomeningocele-in-children-and-young-adults
#16
Guillermo Aldave, Daniel Hansen, Steven W Hwang, Amee Moreno, Valentina Briceño, Andrew Jea
OBJECTIVE Tethered cord syndrome is the clinical manifestation of an abnormal stretch on the spinal cord, presumably causing mechanical injury, a compromised blood supply, and altered spinal cord metabolism. Tethered cord release is the standard treatment for tethered cord syndrome. However, direct untethering of the spinal cord carries potential risks, such as new neurological deficits from spinal cord injury, a CSF leak from opening the dura, and retethering of the spinal cord from normal scar formation after surgery...
March 31, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28359675/measuring-marrow-density-and-area-using-peripheral-quantitative-computed-tomography-at-the-tibia-precision-in-young-and-older-adults-and-individuals-with-spinal-cord-injury
#17
Jenna C Gibbs, Zachary M Brown, Andy K O Wong, B Catharine Craven, Jonathan D Adachi, Lora M Giangregorio
The objective of this study was to compare the test-retest precision error for peripheral quantitative computed tomography (pQCT)-derived marrow density and marrow area segmentation at the tibia using 3 software packages. A secondary analysis of pQCT data in young adults (n = 18, mean ± standard deviation 25.4 ± 3.2 yr), older adults (n = 47, 71.8 ± 8.2 yr), and individuals with spinal cord injury (C1-T12 American Spinal Injury Association Impairment Scale, classes A-C; n = 19, 43...
March 27, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28351230/continuous-monitoring-and-visualization-of-optimum-spinal-cord-perfusion-pressure-in-patients-with-acute-cord-injury
#18
Suliang Chen, Peter Smieleweski, Marek Czosnyka, Marios C Papadopoulos, Samira Saadoun
The optimum spinal cord perfusion pressure (SCPP) after traumatic spinal cord injury (TSCI) is unknown. Here, we describe techniques to compute and display the optimum SCPP in real-time. We recruited adults within 72 hours of severe TSCI (ASIA grades A-C). A pressure probe and a microdialysis catheter were placed on the injured cord. SCPP was computed as mean arterial pressure (MAP) minus intraspinal pressure (ISP), spinal pressure reactivity index (sPRx) as the running ISP/MAP correlation coefficient and continuous optimum SCPP (cSCPPopt) as the SCPP that minimizes sPRx in a moving four-hour window...
March 29, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28350952/future-advances-in-spine-surgery-the-aospine-north-america-perspective
#19
Michael G Fehlings, Christopher S Ahuja, Thomas Mroz, Wellington Hsu, James Harrop
This focus issue highlights state-of-the-art techniques, equipment, and practices in the modern era of spine surgery while providing a glimpse into the next generation of patient care. A broad range of topics are presented to cover the full spectrum of the field. Degenerative diseases are discussed in a series of 3 articles on (1) pathophysiology, management, and surgical approaches to degenerative cervical myelopathy; (2) novel approaches to degenerative thoracolumbar disease (eg, interspinous process spacers, minimally invasive/endoscopic approaches); and (3) animal models and emerging therapeutics in degenerative disk disease...
March 1, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28347417/vascular-imaging-techniques-of-the-spinal-cord
#20
Maria Isabel Vargas, Isabelle Barnaure, Joanna Gariani, José Boto, Alain Pellaton, Jean-Louis Dietemann, Zsolt Kulcsar
The various imaging techniques used to depict vascular lesions of the spinal cord are described in this article with particular emphasis on magnetic resonance imaging (MRI), vascular sequences, and advantages of high-field MRI. Technical vascular protocols are discussed in computed tomography, MRI, and conventional angiography. The diverse magnetic resonance angiography protocols are presented as well as their findings, specificities, and pitfalls. A review of the vascular anatomy and the most common pathologies analyzed by magnetic resonance angiography and conventional angiography is described...
April 2017: Seminars in Ultrasound, CT, and MR
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