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Journal of Neurosurgery. Spine

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https://www.readbyqxmd.com/read/28186472/clinical-presentation-and-treatment-outcomes-of-spinal-epidural-arteriovenous-fistulas
#1
Deena M Nasr, Waleed Brinjikji, Michelle J Clarke, Giuseppe Lanzino
OBJECTIVE Spinal epidural arteriovenous fistulas (SEDAVFs) constitute a rare but treatable cause of vascular myelopathy and are a different subtype from the more common Type I spinal dural AVFs. The purpose of this study was to review a consecutive series of SEDAVFs from a single institution and report on the clinical presentations, functional status, and treatment outcomes. METHODS The authors identified all SEDAVFs treated at their institution from 2005 to 2015. SEDAVFs were defined as spinal AVFs in which the fistulous connection occurred in the epidural venous plexus...
February 10, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28186471/tumoral-calcinosis-of-the-craniovertebral-junction-as-a-cause-of-dysphagia-with-treatment-by-transoral-decompression-case-report
#2
Michael A Mooney, Mark E Oppenlander, U Kumar Kakarla, Nicholas Theodore
Tumoral calcinosis is characterized by tumor-like deposition of calcium in periarticular soft tissue. Spinal involvement is rare, and perioperative diagnosis of tumoral calcinosis can be difficult because lesions may be confused with bony neoplasms. Symptoms of tumoral calcinosis result from bony involvement and/or direct compression of surrounding anatomical structures, for which treatment with surgical decompression can be highly successful. The craniovertebral junction is rarely affected by tumoral calcinosis, and patients with this condition may present with distinct symptoms...
February 10, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28186470/image-guidance-based-on-mri-for-spinal-interstitial-laser-thermotherapy-technical-aspects-and-accuracy
#3
Claudio E Tatsui, Clarissa N G Nascimento, Dima Suki, Behrang Amini, Jing Li, Amol J Ghia, Jonathan G Thomas, R Jason Stafford, Laurence D Rhines, Juan P Cata, Ashok J Kumar, Ganesh Rao
OBJECTIVE Image guidance for spinal procedures is based on 3D-fluoroscopy or CT, which provide poor visualization of soft tissues, including the spinal cord. To overcome this limitation, the authors developed a method to register intraoperative MRI (iMRI) of the spine into a neuronavigation system, allowing excellent visualization of the spinal cord. This novel technique improved the accuracy in the deployment of laser interstitial thermal therapy probes for the treatment of metastatic spinal cord compression...
February 10, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28156208/image-guided-intrathecal-baclofen-pump-catheter-implantation-a-technical-note-and-case-series
#4
Shenandoah Robinson, Faith C Robertson, Hormuzdiyar H Dasenbrock, Cormac P O'Brien, Charles Berde, Horacio Padua
OBJECTIVE Medically refractory spasticity and dystonia are often alleviated with intrathecal baclofen (ITB) administration through an indwelling catheter inserted in the lumbar spine. In patients with cerebral palsy, however, there is a high incidence of concomitant neuromuscular scoliosis. ITB placement may be technically challenging in those who have severe spinal deformity or who have undergone prior instrumented thoracolumbar fusion. Although prior reports have described drilling through the lumbar fusion mass with a high-speed bur, as well as IT catheter implantation at the foramen magnum or cervical spine, these approaches have notable limitations...
February 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28156207/is-lumbar-facet-fusion-biomechanically-equivalent-to-lumbar-posterolateral-onlay-fusion
#5
Jeffrey M Toth, Kevin T Foley, Mei Wang, Howard B Seim, A Simon Turner
OBJECTIVE This study was designed with the following research objectives: 1) to determine the efficacy of facet fusion with recombinant human bone morphogenetic protein-2 (rhBMP-2) on an absorbable collagen sponge (ACS) in an ovine lumbar facet fusion model; 2) to radiographically and histologically compare the efficacy of lumbar facet fusion with rhBMP-2/ACS to facet fusion with an iliac crest bone graft (ICBG); and 3) to biomechanically compare lumbar facet fusion with rhBMP-2/ACS to lumbar posterolateral fusion (PLF) with ICBG...
February 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28156206/heparin-induced-thrombocytopenia-presenting-as-unilateral-lower-limb-paralysis-following-lumbar-spine-surgery-case-report
#6
Brandon W Smith, Jacob R Joseph, Paul Park
Heparin-induced thrombocytopenia (HIT) is a state of thrombocytopenia with a paradoxically elevated thrombotic potential after exposure to heparin. Severe cases can present with multiorgan involvement with direct and secondary effects. Although HIT has been reported following other surgeries, to the authors' knowledge there has not been a report of HIT after spinal surgery. The present case details the course of a patient who underwent elective lumbar surgery followed by delayed presentation of shortness of breath due to multiple pulmonary embolisms and right lower-extremity paralysis due to extensive iliofemoral clot burden with acute compartment syndrome...
February 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28156205/metabolite-and-functional-profile-of-patients-with-cervical-spondylotic-myelopathy
#7
Izabela Aleksanderek, Todd K Stevens, Sandy Goncalves, Robert Bartha, Neil Duggal
OBJECTIVE The goal of this study was to compare the recovery of neuronal metabolism and functional reorganization in the primary motor cortex (M1) between mild and moderate cervical spondylotic myelopathy (CSM) following surgical intervention. METHODS Twenty-eight patients with CSM underwent 3-T MRI scans that included spectroscopy and functional MRI, before surgery and 6 months postsurgery. The classification of severity was based on the modified Japanese Orthopaedic Association questionnaire. Mild and moderate myelopathy were defined by modified Japanese Orthopaedic Association scores > 12 of 18 (n = 15) and 9-12 (n = 13), respectively...
February 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28156204/a-rare-case-of-pharyngeal-perforation-and-expectoration-of-an-entire-anterior-cervical-fixation-construct
#8
Syed A Quadri, John Capua, Vivek Ramakrishnan, Raed Sweiss, Marc Cabanne, Jerry Noel, Brian Fiani, Javed Siddiqi
Anterior cervical discectomy and fusion (ACDF) is a very common surgery performed globally. Although a few cases of expectorating screws or extrusion of screws into the gastrointestinal tract through esophageal perforations have previously been reported, there has not been a case reporting pharyngeal perforation and entire cervical construct extrusion in the literature to date. In this report the authors present the first case involving the extrusion of an entire cervical construct via a tear in the posterior pharyngeal wall...
February 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28128701/an-in-vitro-study-examining-a-novel-suction-curette-device-for-lumbar-discectomy-compared-with-standard-manual-discectomy
#9
William F Lavelle, Nathaniel R Ordway, Ali Araghi, Rudolph A Buckley, Amir H Fayyazi
OBJECTIVE This purpose of this study was to objectively evaluate and assess the efficacy and efficiency of discectomy and endplate preparation during transforaminal lumbar interbody fusion (TLIF) using traditional manual instrumentation versus a novel suction discectomy curette. Transforaminal lumbar interbody fusion is the most widely used approach for lumbar arthrodesis, and its success depends on the ability to achieve fusion. Complete preparation of intervertebral disc space (removal of the nucleus, endplate cartilage, and margin of inner annulus) is the surgical goal...
January 27, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28128700/biomechanical-evaluation-of-an-integrated-fixation-cage-during-fatigue-loading-a-human-cadaver-study
#10
Vivek Palepu, Jonathan H Peck, David D Simon, Melvin D Helgeson, Srinidhi Nagaraja
OBJECTIVE Lumbar cages with integrated fixation screws offer a low-profile alternative to a standard cage with anterior supplemental fixation. However, the mechanical stability of integrated fixation cages (IFCs) compared with a cage with anterior plate fixation under fatigue loading has not been investigated. The purpose of this study was to compare the biomechanical stability of a screw-based IFC with a standard cage coupled with that of an anterior plate under fatigue loading. METHODS Eighteen functional spinal units were implanted with either a 4-screw IFC or an anterior plate and cage (AP+C) without integrated fixation...
January 27, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28128699/surgical-results-and-complications-of-anterior-decompression-and-fusion-as-a-revision-surgery-after-initial-posterior-surgery-for-cervical-myelopathy-due-to-ossification-of-the-posterior-longitudinal-ligament
#11
Seiichi Odate, Jitsuhiko Shikata, Tsunemitsu Soeda, Satoru Yamamura, Shinji Kawaguchi
OBJECTIVE Ossification of the posterior longitudinal ligament (OPLL) is a progressive disease. An anterior cervical decompression and fusion (ACDF) procedure for cervical OPLL is theoretically feasible, as the lesion exists anteriorly; however, such a procedure is considered technically demanding and is associated with serious complications. Cervical laminoplasty is reportedly an effective alternative procedure with few complications; it is recognized as a comparatively safe procedure, and has been widely used as an initial surgery for cervical OPLL...
January 27, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28128698/leptomeningeal-dissemination-of-a-low-grade-lumbar-paraganglioma-case-report
#12
Nick Thomson, Karel Pacak, Meic H Schmidt, Cheryl A Palmer, Karen L Salzman, Marjan Champine, Joshua D Schiffman, Adam L Cohen
Leptomeningeal dissemination of paraganglioma is rare, with only 2 prior cases in the literature. The authors present the case of a metastatic low-grade lumbar paraganglioma via leptomeningeal dissemination. This report emphasizes the utility of 3,4-dihydroxy-6-(18)F-fluoro-l-phenylalanine ((18)F-FDOPA) PET scanning for diagnosis, as well as the combination of radiation therapy and alkylating chemotherapeutic agents for the treatment of this rare phenomenon. The patient was a 61-year-old woman who presented with low-back pain and was found to have an isolated L-3 intrathecal tumor on MRI...
January 27, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28106525/open-and-endovascular-treatment-of-spinal-dural-arteriovenous-fistulas-a-10-year-experience
#13
Matthew J Koch, Christopher J Stapleton, Pankaj K Agarwalla, Collin Torok, John H Shin, Jean-Valery Coumans, Lawrence F Borges, Christopher S Ogilvy, James D Rabinov, Aman B Patel
OBJECTIVE Vascular malformations of the spine represent rare clinical entities with profound neurological implications. Previously reported studies on management strategies for spinal dural arteriovenous fistulas (sDAVFs) appeared before the advent of modern liquid embolic agents. Authors of the present study review their institutional experience with endovascularly and surgically treated sDAVFs. METHODS The authors performed a retrospective, observational, single-center case series on sDAVFs treated with endovascular embolization, microsurgical occlusion, or both between 2004 and 2013...
January 20, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28106524/the-utility-of-3d-printing-for-surgical-planning-and-patient-specific-implant-design-for-complex-spinal-pathologies-case-report
#14
Ralph J Mobbs, Marc Coughlan, Robert Thompson, Chester E Sutterlin, Kevin Phan
OBJECTIVE There has been a recent renewed interest in the use and potential applications of 3D printing in the assistance of surgical planning and the development of personalized prostheses. There have been few reports on the use of 3D printing for implants designed to be used in complex spinal surgery. METHODS The authors report 2 cases in which 3D printing was used for surgical planning as a preoperative mold, and for a custom-designed titanium prosthesis: one patient with a C-1/C-2 chordoma who underwent tumor resection and vertebral reconstruction, and another patient with a custom-designed titanium anterior fusion cage for an unusual congenital spinal deformity...
January 20, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28106523/influence-of-postoperative-sagittal-balance-and-spinopelvic-parameters-on-the-outcome-of-patients-surgically-treated-for-degenerative-lumbar-spondylolisthesis
#15
Ingrid Radovanovic, Jennifer C Urquhart, Venkat Ganapathy, Fawaz Siddiqi, Kevin R Gurr, Stewart I Bailey, Christopher S Bailey
OBJECTIVE The object of this study was to determine the association between postoperative sagittal spinopelvic alignment and patient-rated outcome measures following decompression and fusion for lumbar degenerative spondylolisthesis. METHODS The authors identified a consecutive series of patients who had undergone surgery for lumbar degenerative spondylolisthesis between 2008 and 2012, with an average follow-up of 3 years (range 1-6 years). Surgery was performed to address the clinical symptoms of spinal stenosis, not global sagittal alignment...
January 20, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28084933/clinical-outcomes-following-resection-of-giant-spinal-schwannomas-a-case-series-of-32-patients
#16
Madeleine Sowash, Ori Barzilai, Sweena Kahn, Lily McLaughlin, Patrick Boland, Mark H Bilsky, Ilya Laufer
OBJECTIVE The objective of this study was to review clinical outcomes following resection of giant spinal schwannomas. METHODS The authors conducted a retrospective review of a case series of patients with giant spinal schwannomas at a tertiary cancer hospital. RESULTS Thirty-two patients with giant spinal schwannomas underwent surgery between September 1998 and May 2013. Tumor size ranged from 2.5 cm to 14.6 cm with a median size of 5.8 cm. There were 9 females (28.1%) and 23 males (71.9%), and the median age was 47 years (range 23-83 years)...
January 13, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28084932/letter-to-the-editor-strategic-use-of-cone-beam-ct-in-modern-spine-surgery
#17
Chih-Chang Chang, Li-Yu Fay, Jau-Ching Wu, Peng-Yuan Chang, Tsung-Hsi Tu, Henrich Cheng, Wen-Cheng Huang
No abstract text is available yet for this article.
January 13, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28084931/noninfectious-prevertebral-soft-tissue-inflammation-and-hematoma-eliciting-swelling-after-anterior-cervical-discectomy-and-fusion
#18
Kenji Yagi, Hiroshi Nakagawa, Toshiyuki Okazaki, Shinsuke Irie, Toru Inagaki, Osamu Saito, Shinji Nagahiro, Koji Saito
OBJECTIVE Anterior cervical discectomy and fusion (ACDF) procedures are performed to treat patients with cervical myelopathy or radiculopathy. Dysphagia is a post-ACDF complication. When it coincides with prevertebral space enlargement and inflammation, surgical site infection and pharyngoesophageal perforation must be considered. The association between dysphagia and prevertebral inflammation has not been reported. The authors investigated factors eliciting severe dysphagia and its relationship with prevertebral inflammation in patients who had undergone ACDF...
January 13, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28084930/erratum-radiation-exposure-in-spine-surgery-using-an-image-guided-system-based-on-intraoperative-cone-beam-computed-tomography-analysis-of-107-consecutive-cases
#19
Francesco Costa
No abstract text is available yet for this article.
January 13, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28059687/congenital-hypoplasia-of-the-lumbar-pedicle-with-spondylolisthesis-report-of-2-cases
#20
Chang-Sheng Hsieh, Sang-Ho Lee, Hyung Chang Lee, Hyeong-Seok Oh, Byeong-Wook Hwang, Sang-Joon Park, Jian-Han Chen
Congenital hypoplasia of the spinal pedicle is a rare condition. Previously reported cases were treated conservatively or with posterior instrumented fusion. However, the absence or hypoplasia of the lumbar pedicle may increase the difficulty of pedicle screw fixation and fusion. Herein, the authors describe 2 cases of rare adult congenital hypoplasia of the right lumbar pedicles associated with spondylolisthesis. The patients underwent anterior lumbar interbody fusion with a stand-alone cage as well as percutaneous pedicle screw fixation...
January 6, 2017: Journal of Neurosurgery. Spine
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