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Journal of Neurosurgery. Spine

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https://www.readbyqxmd.com/read/29053084/intubation-biomechanics-validation-of-a-finite-element-model-of-cervical-spine-motion-during-endotracheal-intubation-in-intact-and-injured-conditions
#1
Benjamin C Gadomski, Snehal S Shetye, Bradley J Hindman, Franklin Dexter, Brandon G Santoni, Michael M Todd, Vincent C Traynelis, Robert P From, Ricardo B Fontes, Christian M Puttlitz
OBJECTIVE Because of limitations inherent to cadaver models of endotracheal intubation, the authors' group developed a finite element (FE) model of the human cervical spine and spinal cord. Their aims were to 1) compare FE model predictions of intervertebral motion during intubation with intervertebral motion measured in patients with intact cervical spines and in cadavers with spine injuries at C-2 and C3-4 and 2) estimate spinal cord strains during intubation under these conditions. METHODS The FE model was designed to replicate the properties of an intact (stable) spine in patients, C-2 injury (Type II odontoid fracture), and a severe C3-4 distractive-flexion injury from prior cadaver studies...
October 20, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29053083/surgical-management-of-penetrating-spinal-cord-injury-primarily-due-to-shrapnel-and-its-effect-on-neurological-outcome-a-literature-review-and-meta-analysis
#2
Michael H Lawless, Evan J Lytle, Andrea F McGlynn, John A Engler
OBJECTIVE This study was performed to determine whether decompression of penetrating spinal cord injury (SCI) due to explosive shrapnel leads to greater neurological recovery than conservative management. METHODS In accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, a comprehensive literature search using PubMed/MEDLINE, Web of Science, Google Scholar, and the Defense Technical Information Center public site was conducted on May 2, 2016. Studies that described penetrating SCI with shrapnel as an etiology, included surgical and/or conservative management, and demonstrated admission and follow-up neurological status were eligible for inclusion in this study...
October 20, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29053082/letter-to-the-editor-alternative-c-1-screw-placement-technique
#3
Faheem A Sandhu, Richard G Fessler
No abstract text is available yet for this article.
October 20, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29027895/changes-in-foraminal-area-with-anterior-decompression-versus-keyhole-foraminotomy-in-the-cervical-spine-a-biomechanical-investigation
#4
Jacqueline Nguyen, Bryant Chu, Calvin C Kuo, Jeremi M Leasure, Christopher Ames, Dimitriy Kondrashov
OBJECTIVE Anterior cervical discectomy and fusion (ACDF) with or without partial uncovertebral joint resection (UVR) and posterior keyhole foraminotomy are established operative procedures to treat cervical disc degeneration and radiculopathy. Studies have demonstrated reliable results with each procedure, but none have compared the change in neuroforaminal area between indirect and direct decompression techniques. The purpose of this study was to determine which cervical decompression method most consistently increases neuroforaminal area and how that area is affected by neck position...
October 13, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29027894/editorial-the-clinical-and-economic-costs-of-treating-cervical-radiculopathy-the-age-old-question-of-the-anterior-versus-posterior-approach
#5
Anthony C Lau, Michael Y Wang
No abstract text is available yet for this article.
October 13, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29027893/hospital-acquired-conditions-predictors-and-implications-for-outcomes-following-spine-tumor-resection
#6
Nikita Lakomkin, Constantinos G Hadjipanayis
OBJECTIVE Hospital-acquired conditions (HACs) significantly compromise patient safety, and have been identified by the Centers for Medicare and Medicaid Services as events that will be associated with penalties for surgeons. The mitigation of HACs must be an important consideration during the postoperative management of patients undergoing spine tumor resection. The purpose of this study was to identify the risk factors for HACs and to characterize the relationship between HACs and other postoperative adverse events following spine tumor resection...
October 13, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28984515/surgical-timing-for-cervical-and-upper-thoracic-injuries-in-patients-with-polytrauma
#7
Daniel Lubelski, Suzanne Tharin, John J Como, Michael P Steinmetz, Heather Vallier, Timothy Moore
OBJECTIVE Few studies have investigated the advantages of early spinal stabilization in the patient with polytrauma in terms of reduction of morbidity and mortality. Previous analyses have shown that early stabilization may reduce ICU stay, with no effect on complication rates. METHODS The authors prospectively observed 340 polytrauma patients with an Injury Severity Score (ISS) of greater than 16 at a single Level 1 trauma center who were treated in accordance with a protocol termed "early appropriate care," which emphasizes operative treatment of various fractures within 36 hours of injury...
October 6, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28984514/inpatient-costs-and-blood-transfusion-rates-of-sarcopenic-patients-following-thoracolumbar-spine-surgery
#8
Steven L Bokshan, Alex Han, J Mason DePasse, Stephen E Marcaccio, Adam E M Eltorai, Alan H Daniels
OBJECTIVE Sarcopenia, the muscle atrophy associated with aging and disease progression, accounts for nearly $18.5 billion in health care expenditures annually. Given the high prevalence of sarcopenia in patients undergoing orthopedic surgery, the goal of this study was to assess the impact of sarcopenia on inpatient costs following thoracolumbar spine surgery. METHODS Patients older than 55 years undergoing thoracolumbar spine surgery from 2003 to 2015 were retrospectively analyzed. Sarcopenia was measured using total psoas area at the L-4 vertebra on perioperative CT scans...
October 6, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28984513/fascicular-shifting-a-novel-technique-to-overcome-large-nerve-defects
#9
Maria Hader, Matthias E Sporer, Aidan D Roche, Ewald Unger, Konstantin D Bergmeister, Robert Wakolbinger, Oskar C Aszmann
OBJECTIVE Over the last decade, a number of authors have investigated the utility of different biological and synthetic matrices as alternatives to conventional nerve grafts. However, the autologous nerve graft remains the gold standard, even though it often involves using a pure sensory nerve to reconstruct a mixed or even a pure motor nerve. Furthermore, limited donor sites often necessitate a significant mismatch of needed nerve tissue, especially for large proximal nerve defects such as brachial plexus lesions...
October 6, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28984512/spinal-cord-injury-after-traumatic-spine-fracture-in-patients-with-ankylosing-spinal-disorders
#10
Frederik R Teunissen, Bianca M Verbeek, Thomas D Cha, Joseph H Schwab
OBJECTIVE Spinal cord injury (SCI) is a major complication of spinal fractures in patients with ankylosing spondylitis (AS) and diffuse idiopathic skeletal hyperostosis (DISH). Due to the uncommon nature of these conditions, existing literature consists of relatively small case series without detailed neurological data. This study aims to investigate the incidence, predictors, and sequelae of SCI in patients with a traumatic fracture of the ankylosed spine. METHODS The study included all patients older than 18 years of age with AS or DISH who presented to two affiliated tertiary care centers between January 1, 1990, and January 1, 2016, and had a traumatic fracture of the spine...
October 6, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28984511/interbody-distraction-and-vertebral-body-reconstruction-with-polymethylmethacrylate-for-the-treatment-of-pathological-fractures
#11
Scott L Zuckerman, Ganesh Rao, Laurence D Rhines, Ian E McCutcheon, Richard G Everson, Claudio E Tatsui
OBJECTIVE Treatment of epidural spinal cord compression (ESCC) caused by tumor includes surgical decompression and stabilization followed by postoperative radiation. In the case of severe axial loading impairment, anterior column reconstruction is indicated. The authors describe the use of interbody distraction to restore vertebral body height and correct kyphotic angulation prior to reconstruction with polymethylmethacrylate (PMMA), and report the long-term durability of such reconstruction. METHODS A single institution, prospective series of patients with ESCC undergoing single-stage decompression, anterior column reconstruction, and posterior instrumentation from 2013 to 2016 was retrospectively analyzed...
October 6, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28960162/patient-characteristics-of-smokers-undergoing-lumbar-spine-surgery-an-analysis-from-the-quality-outcomes-database
#12
Anthony L Asher, Clinton J Devin, Brandon McCutcheon, Silky Chotai, Kristin R Archer, Hui Nian, Frank E Harrell, Matthew McGirt, Praveen V Mummaneni, Christopher I Shaffrey, Kevin Foley, Steven D Glassman, Mohamad Bydon
OBJECTIVE In this analysis the authors compare the characteristics of smokers to nonsmokers using demographic, socioeconomic, and comorbidity variables. They also investigate which of these characteristics are most strongly associated with smoking status. Finally, the authors investigate whether the association between known patient risk factors and disability outcome is differentially modified by patient smoking status for those who have undergone surgery for lumbar degeneration. METHODS A total of 7547 patients undergoing degenerative lumbar surgery were entered into a prospective multicenter registry (Quality Outcomes Database [QOD])...
September 29, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28960161/geriatric-comanagement-reduces-perioperative-complications-and-shortens-duration-of-hospital-stay-after-lumbar-spine-surgery-a-prospective-single-institution-experience
#13
Owoicho Adogwa, Aladine A Elsamadicy, Victoria D Vuong, Jessica Moreno, Joseph Cheng, Isaac O Karikari, Carlos A Bagley
OBJECTIVE Geriatric patients undergoing lumbar spine surgery have unique needs due to the physiological changes of aging. They are at risk for adverse outcomes such as delirium, infection, and iatrogenic complications, and these complications, in turn, contribute to the risk of functional decline, nursing home admission, and death. Whether preoperative and perioperative comanagement by a geriatrician reduces the incidence of in-hospital complications and length of in-hospital stay after elective lumbar spine surgery remains unknown...
September 29, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28960160/overpowering-posterior-lumbar-instrumentation-and-fusion-with-hyperlordotic-anterior-lumbar-interbody-cages-followed-by-posterior-revision-a-preliminary-feasibility-study
#14
Abhijeet Kadam, Nathan Wigner, Philip Saville, Vincent Arlet
OBJECTIVE The authors' aim in this study was to evaluate whether sagittal plane correction can be obtained from the front by overpowering previous posterior instrumentation and/or fusion with hyperlordotic anterior lumbar interbody fusion (ALIF) cages in patients undergoing revision surgery for degenerative spinal conditions and/or spinal deformities. METHODS The authors report their experience with the application of hyperlordotic cages at 36 lumbar levels for ALIFs in a series of 20 patients who underwent revision spinal surgery at a single institution...
September 29, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28937328/biomechanical-effects-of-hybrid-stabilization-on-the-risk-of-proximal-adjacent-segment-degeneration-following-lumbar-spinal-fusion-using-an-interspinous-device-or-a-pedicle-screw-based-dynamic-fixator
#15
Chang-Hyun Lee, Young Eun Kim, Hak Joong Lee, Dong Gyu Kim, Chi Heon Kim
OBJECTIVE Pedicle screw-rod-based hybrid stabilization (PH) and interspinous device-based hybrid stabilization (IH) have been proposed to prevent adjacent-segment degeneration (ASD) and their effectiveness has been reported. However, a comparative study based on sound biomechanical proof has not yet been reported. The aim of this study was to compare the biomechanical effects of IH and PH on the transition and adjacent segments. METHODS A validated finite element model of the normal lumbosacral spine was used...
September 22, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28937936/is-high-t-1-slope-a-significant-risk-factor-for-developing-interlaminar-bony-fusion-after-cervical-laminoplasty-a-retrospective-cohort-study
#16
Takeshi Oichi, Yasushi Oshima, Hiroyuki Oka, Yuki Taniguchi, Hirotaka Chikuda, Yoshitaka Matsubayashi, Katsushi Takeshita, Sakae Tanaka
OBJECTIVE Several investigators have reported the occurrence of interlaminar bony fusion after cervical laminoplasty, which is reportedly associated with reduced postoperative cervical range of motion (ROM). However, to the authors' knowledge, no previous study has investigated the characteristics of patients who were likely to develop interlaminar bony fusion after cervical laminoplasty. Therefore, the objective of this study was to investigate the risk factors for interlaminar bony fusion in patients with cervical spondylotic myelopathy (CSM) following cervical laminoplasty and to investigate the effect of interlaminar bony fusion on surgical outcomes...
September 15, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28937935/the-impact-of-the-2006-massachusetts-health-care-reform-law-on-spine-surgery-patient-payer-mix-status-and-age
#17
Nicolas W Villelli, Hong Yan, Jian Zou, Nicholas M Barbaro
OBJECTIVE Several similarities exist between the Massachusetts health care reform law of 2006 and the Affordable Care Act (ACA). The authors' prior neurosurgical research showed a decrease in uninsured surgeries without a significant change in surgical volume after the Massachusetts reform. An analysis of the payer-mix status and the age of spine surgery patients, before and after the policy, should provide insight into the future impact of the ACA on spine surgery in the US. METHODS Using the Massachusetts State Inpatient Database and spine ICD-9-CM procedure codes, the authors obtained demographic information on patients undergoing spine surgery between 2001 and 2012...
September 15, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28885128/sagittal-alignment-and-complications-following-lumbar-3-column-osteotomy-does-the-level-of-resection-matter
#18
Emmanuelle Ferrero, Barthelemy Liabaud, Jensen K Henry, Christopher P Ames, Khaled Kebaish, Gregory M Mundis, Richard Hostin, Munish C Gupta, Oheneba Boachie-Adjei, Justin S Smith, Robert A Hart, Ibrahim Obeid, Bassel G Diebo, Frank J Schwab, Virginie Lafage
OBJECTIVE Three-column osteotomy (3CO) is a demanding technique that is performed to correct sagittal spinal malalignment. However, the impact of the 3CO level on pelvic or truncal sagittal correction remains unclear. In this study, the authors assessed the impact of 3CO level and postoperative apex of lumbar lordosis on sagittal alignment correction, complications, and revisions. METHODS In this retrospective study of a multicenter spinal deformity database, radiographic data were analyzed at baseline and at 1- and 2-year follow-up to quantify spinopelvic alignment, apex of lordosis, and resection angle...
September 8, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28885127/timing-and-risks-of-chemoprophylaxis-after-spinal-surgery-a-single-center-experience-with-6869-consecutive-patients
#19
Ekamjeet S Dhillon, Ryan Khanna, Michael Cloney, Helena Roberts, George R Cybulski, Tyler R Koski, Zachary A Smith, Nader S Dahdaleh
OBJECTIVE Venous thromboembolism (VTE) after spinal surgery is a major cause of morbidity, but chemoprophylactic anticoagulation can prevent it. However, there is variability in the timing and use of chemoprophylactic anticoagulation after spine surgery, particularly given surgeons' concerns for spinal epidural hematomas. The goal of this study was to provide insight into the safety, efficacy, and timing of anticoagulation therapy after spinal surgery. METHODS The authors retrospectively examined records from 6869 consecutive spinal surgeries performed in their departments at Northwestern University...
September 8, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28885126/utility-and-costs-of-radiologist-interpretation-of-perioperative-imaging-in-patients-with-traumatic-single-level-thoracolumbar-fractures
#20
Michael H Weber, Lojan Sivakumaran, Maryse Fortin, Alisson R Teles, Jeff D Golan, Carlo Santaguida, Peter Jarzem, Thierry Pauyo
OBJECTIVE The cost of spine management is rising. As diagnostic imaging accounts for approximately 10% of total patient care spending, there is interest in determining if economies could be made with regard to the routine consultation of radiology for image interpretation. In the context of spine trauma, both the spine surgeon and the radiologist interpret perioperative imaging. Authors of the present study investigated the impact of radiologist interpretation of perioperative imaging from patients with traumatic single-level thoracolumbar fractures given that spine surgeons are expected to be comfortable interpreting pathologies of the musculoskeletal system...
September 8, 2017: Journal of Neurosurgery. Spine
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