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https://www.readbyqxmd.com/read/28229033/an-innovative-use-of-cortoss-bone-cement-to-stabilize-a-nonunion-after-interbody-fusion
#1
Michelle Granville, Robert E Jacobson
A 65-year-old male originally had surgery for spondylolisthesis at L5-S1 in 2008 and then went on to have an L4-5 transforaminal lumbar interbody fusion (TLIF) with pedicle screw fixation from L4 to S1 and interbody graft in 2010. Despite having two surgical procedures, he continued with intractable back pain and was told he had a failed lumbar fusion. When he was evaluated with a computerized tomography (CT) scan from April 2015, it demonstrated an erosive nonunion of the L4-5 interbody fusion without incorporation of the polyetheretherketone (PEEK) cage...
January 20, 2017: Curēus
https://www.readbyqxmd.com/read/28224306/localization-of-the-fetal-conus-medullaris-by-oblique-view-extended-imaging
#2
Shui-Hua Yang, Zuo-Jian Yang, Yuan-Yuan Li, Huan Huang, Xiao-Xian Tian
OBJECTIVE: To evaluate the accuracy of oblique view extended imaging (OVEI) in locating the position of the fetal conus medullaris. METHODS: One hundred and twenty-two normal fetuses and five counterparts with spinal bifida received prenatal ultrasound examination. The vertebral body at the terminal of the conus medullaris and the coronal section of over five vertebral bodies were reconstructed using OVEI. Development of the nervous system of normal fetuses was assessed at postnatal day 28...
February 21, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28216287/association-between-measures-of-vertebral-endplate-morphology-and-lumbar-intervertebral-disc-degeneration
#3
Semra Duran, Mehtap Cavusoglu, Hatice Gul Hatipoglu, Deniz Sozmen Cılız, Bulent Sakman
PURPOSE: The aim of this study was to evaluate the association between vertebral endplate morphology and the degree of lumbar intervertebral disc degeneration via magnetic resonance imaging (MRI). METHODS: In total, 150 patients who met the inclusion criteria and were 20-60 years of age were retrospectively evaluated. Patients were evaluated for the presence of intervertebral disc degeneration or herniation, and the degree of degeneration was assessed at all lumbar levels...
February 16, 2017: Canadian Association of Radiologists Journal, Journal L'Association Canadienne des Radiologistes
https://www.readbyqxmd.com/read/28213647/increased-and-decreased-pelvic-incidence-sagittal-facet-joint-orientations-are-associated-with-lumbar-spine-osteoarthritis-in-a-large-cadaveric-collection
#4
Douglas S Weinberg, Raymond W Liu, Katherine K Xie, William Z Morris, Jeremy J Gebhart, Zachary L Gordon
PURPOSE: Degenerative joint disease of the lumbar spine is a pervasive problem in healthcare; however, its aetiology and risk factors remain poorly defined. There have been recent attempts to correlate the anatomic parameters of facet angle and pelvic incidence with spine osteoarthritis, although data remains limited. The purpose of this experiment was to determine how age, gender, race, facet angle, tropism, and pelvic incidence correlate to facet joint osteoarthritis in the lumbar spine...
February 17, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28204925/circumferential-fusion-for-degenerative-lumbar-spondylolisthesis-complicated-by-distal-junctional-grade-4-spondylolisthesis-in-the-sub-acute-post-operative-setting
#5
Alexander A Theologis, Deeptee Jain, Christopher P Ames, Murat Pekmezci
INTRODUCTION: Surgical management for lumbar stenosis is generally safe and provides significant improvements in pain, disability, and function. Successful lumbar decompression hinges on removing an appropriate amount of lamina and other compressive pathology in the lateral recess. Too little bony decompression can result in persistent pain and disability, while over resection of the pars and/or facets may jeopardize spinal stability. CASE REPORT: In this unique report, we present for the first time an acute iatrogenic grade 4 L5-S1 spondylolisthesis distal to a L3-5 laminectomy and circumferential instrumented fusion due to bilateral iatrogenic L5 pars fractures and its management and clinical outcomes after revision operation...
February 15, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28199880/is-pelvic-fixation-the-only-option-to-provide-additional-stability-to-the-sacral-anchorage-in-long-lumbar-instrumentation-a-comparative-biomechanical-study-of-new-techniques
#6
David Volkheimer, Heiko Reichel, Hans-Joachim Wilke, Friederike Lattig
BACKGROUND: Supplementary iliac screws have the highest potential to protect S1-pedicle-screws from loosening in long fusion constructs. However, this technique bridges the iliosacral joint with potential disadvantages for the patient. This study aimed to evaluate if two different established fixation techniques can be used in addition to pedicle screws as alternative to iliac screws, and if these two techniques can provide similar stability when S1-pedicle-screws are loosened. METHODS: Flexibility testing with pure moments of 7...
February 8, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28178992/percutaneous-transforaminal-endoscopic-surgery-ptes-for-symptomatic-lumbar-disc-herniation-a-surgical-technique-outcome-and-complications-in-209-consecutive-cases
#7
Yu-Tong Gu, Zhan Cui, Hong-Wei Shao, Yun Ye, Ai-Qun Gu
BACKGROUND: We designed an easy posterolateral transforaminal endoscopic decompression technique, termed PTES, for radiculopathy secondary to lumbar disc herniation. The purpose of the study is to describe the technique of PTES and evaluate the efficacy and safety for treatment of lumbar disc herniation including primary herniation, reherniation, intracanal herniation, and extracanal herniation and to report outcome and complications. METHODS: PTES was performed to treat 209 cases of intracanal or extracanal herniations with or without extruding or sequestrated fragment, high iliac crest, scoliosis, calcification, or cauda equina syndrome including recurrent herniation after previous surgical intervention at the index level or adjacent disc herniation after decompression and fusion...
February 8, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28178092/a-randomized-comparison-between-ultrasound-and-fluoroscopy-guided-sacral-lateral-branch-blocks
#8
Roderick J Finlayson, John-Paul B Etheridge, Maria Francisca Elgueta, Atikun Thonnagith, Frederick De Villiers, Bill Nelems, De Q Tran
BACKGROUND AND OBJECTIVES: This randomized trial compared ultrasound (US)- and fluoroscopy-guided sacral lateral branch (SLB) blocks. We hypothesized that US would require a shorter performance time. METHODS: Forty patients who required unilateral sacral lateral branch blocks for chronic low back pain were randomized to US or fluoroscopy guidance. Before the performance of the assigned block, an investigator who was not involved in patient care carried out baseline analgesic testing...
February 6, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28166904/difference-between-male-and-female-workers-lifting-the-same-relative-load-when-palletizing-boxes
#9
A Plamondon, C Larivière, D Denis, H Mecheri, I Nastasia
A few biomechanical studies have contrasted the work techniques of female and male workers during manual material handling (MMH). A recent study showed that female workers differed from males mostly in the strategy they used to lift 15-kg boxes from the ground, especially regarding task duration, knee and back postures and interjoint coordination. However, the lifting technique difference observed in females compared to males was perhaps due to a strength differences. The objective of this study was to test whether female workers would repeat the same lifting technique with a load adjusted to their overall strength (females: 10 kg; males: 15 kg), which can be considered a "relative load" since the overall back strength of females is 2/3 that of males...
April 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28152019/3d-modeling-of-the-spine-using-eos-imaging-system-inter-reader-reproducibility-and-reliability
#10
Johannes Rehm, Thomas Germann, Michael Akbar, Wojciech Pepke, Hans-Ulrich Kauczor, Marc-André Weber, Daniel Spira
OBJECTIVES: To retrospectively assess the interreader reproducibility and reliability of EOS 3D full spine reconstructions in patients with adolescent idiopathic scoliosis (AIS). METHODS: 73 patients with mean age of 17 years and a moderate AIS (median Cobb Angle 18.2°) obtained low-dose standing biplanar radiographs with EOS. Two independent readers performed "full spine" 3D reconstructions of the spine with the "full-spine" method adjusting the bone contour of every thoracic and lumbar vertebra (Th1-L5)...
2017: PloS One
https://www.readbyqxmd.com/read/28138779/outcome-of-l5-radiculopathy-after-reduction-and-instrumented-transforaminal-lumbar-interbody-fusion-of-high-grade-l5-s1-isthmic-spondylolisthesis-and-the-role-of-intraoperative-neurophysiological-monitoring
#11
Ralph T Schär, Martin Sutter, Anne F Mannion, Andreas Eggspühler, Dezsö Jeszenszky, Tamas F Fekete, Frank Kleinstück, Daniel Haschtmann
PURPOSE: To evaluate the incidence and course of iatrogenic L5 radiculopathy after reduction and instrumented fusion of high-grade L5-S1 isthmic spondylolisthesis and the role of intraoperative neurophysiological monitoring (IONM). METHODS: Consecutive patients treated for high-grade spondylolisthesis with IONM from 2005 to 2013 were screened for eligibility. Prospectively collected clinical and surgical data as well as radiographic outcomes were analyzed retrospectively...
January 31, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28138771/l5-corpectomy-the-lumbosacral-segmental-geometry-and-clinical-outcome-a-consecutive-series-of-14-patients-and-review-of-the-literature
#12
Martin Vazan, Yu-Mi Ryang, Julia Gerhardt, Felix Zibold, Insa Janssen, Florian Ringel, Jens Gempt, Bernhard Meyer
PURPOSE: We analyzed the lumbosacral segmental geometry and clinical outcome in patients undergoing L5 corpectomy. METHODS: Fourteen consecutive patients who underwent L5 (n = 12) or L4 + 5 (n = 2) corpectomy at our department between January 2010 and April 2015 were included. All patients underwent a baseline physical and neurologic examination on admission. The diagnostic routine included MRI and CT scans and, if possible, an upright X-ray of the lumbar spine before and after surgery...
January 31, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28137401/secondary-hyperalgesia-occurs-regardless-of-unilateral-or-bilateral-knee-osteoarthritis-involvement-in-individuals-with-mild-or-moderate-level
#13
Vanessa Martins Pereira Silva Moreira, Saulo Delfino Barboza, Juliana Borges Oliveira, Janser Moura Pereira, Valdeci Carlos Dionisio
BACKGROUND: Secondary hyperalgesia in individuals with less severe levels of knee osteoarthritis remains unclear. The objective of this study was to measure the pressure pain threshold of individuals with mild or moderate knee osteoarthritis and compare with no osteoarthritis. METHODS: Ten healthy controls and 30 individuals with mild or moderate knee osteoarthritis divided into two groups (unilateral and bilateral involvement) were included. Dermatomes in lumbar levels (L1, L2, L3, L4 and L5) and sacral level (S1 and S2), myotomes (vastus medialis, vastus lateralis, rectus femoris, adductor longus, tibialis anterior, peroneus longus, iliacus, quadratus lumborum, and popliteus muscles), and sclerotomes in lumbar levels (L1-L2, L2-L3, L3-L4, L4-L5 supraspinous ligaments), over the L5-S1 and S1-S2 sacral areas, pes anserinus bursae, and at the patellar tendon pressure pain threshold were assessed and compared between individuals with and without knee osteoarthritis...
January 2017: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/28127376/safety-and-efficacy-of-mini-open-transforaminal-lumbar-interbody-fusion
#14
Mohamed M Mohi Eldin, Ehab M Eissa, Haitham M Elmorsy
OBJECTIVE: Mini-transforaminal lumbar interbody fusion (Mini-TLIF) and other minimally invasive approaches introduced for the purpose of treating lumbar degenerative disc disease and instability are achieving high success and safety rates as the conventional approaches. Moreover, it has less soft tissue damage, minimal blood loss, and less hospital stay. METHODS: A prospective study was conducted from 2012 to 2014 on 28 patients who were subjected to Mini-open TLIF combined with transpedicular screw fixation for spondylolisthesis and degenerative disc disease...
December 2016: Korean Journal of Spine
https://www.readbyqxmd.com/read/28126302/patterns-of-recurrence-after-postprostatectomy-fossa-radiation-therapy-identified-by-c-11-choline-positron-emission-tomography-computed-tomography
#15
William P Parker, Jaden D Evans, Bradley J Stish, Sean S Park, Kenneth Olivier, Richard Choo, Mark A Nathan, Brian T Welch, R Jeffrey Karnes, Lance A Mynderse, Thomas M Pisansky, Eugene D Kwon, Val J Lowe, Brian J Davis
PURPOSE: To evaluate C-11 choline positron emission tomography/computed tomography (CholPET) in staging and determining patterns of recurrence in prostate cancer patients with rising prostate-specific antigen levels after prostatectomy radiation therapy (RT). METHODS AND MATERIALS: The study includes patients with biochemical failure after postprostatectomy RT who underwent CholPET between 2008 and 2015. Patient and disease characteristics were examined in relation to sites of recurrence...
March 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28119770/lumbar-herniated-disc-spontaneous-regression
#16
Idiris Altun, Kasım Zafer Yüksel
BACKGROUND: Low back pain is a frequent condition that results in substantial disability and causes admission of patients to neurosurgery clinics. To evaluate and present the therapeutic outcomes in lumbar disc hernia (LDH) patients treated by means of a conservative approach, consisting of bed rest and medical therapy. METHODS: This retrospective cohort was carried out in the neurosurgery departments of hospitals in Kahramanmaraş city and 23 patients diagnosed with LDH at the levels of L3-L4, L4-L5 or L5-S1 were enrolled...
January 2017: Korean Journal of Pain
https://www.readbyqxmd.com/read/28116511/evaluation-of-changes-in-lumbar-neuroforaminal-dimensions-in-symptomatic-young-adults-using-positional-mri
#17
Zhiwei Ren, An Liu, Kaixiang Yang, Dalin Wang, Zorica Buser, Jeffrey C Wang
PURPOSE: To investigate the changes of lumbar neural foramina size during dynamic motion using positional MRI. METHODS: Two hundred and fifty neural foramina from 50 patients were analyzed. Lumbar foraminal height, width, and area parameters from L1 to S1 were evaluated for changes in extension, neutral, and flexion positions on T2 parasagittal positional MRI images, and were correlated to lumbar angular motion. One-way analysis of variance (ANOVA) and post hoc analysis were used to examine the differences between levels and positions...
January 23, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28114923/intervertebral-disc-and-vertebral-endplate-subchondral-changes-associated-with-modic-1-changes-of-the-lumbar-spine-a-cross-sectional-study
#18
Christelle Nguyen, Marylène Jousse, Serge Poiraudeau, Antoine Feydy, François Rannou
BACKGROUND: Modic 1 changes are usually associated with degenerative disc disease (DDD). We aimed to compare Modic 1 changes with advanced degenerative disc disease (>50%-intervertebral space narrowing [IVSN]) to Modic 1 changes with less advanced lumbar degenerative disc disease (≤50%-IVSN). METHODS: We conducted a cross-sectional study. The computerized MRI database from a French tertiary care hospital was searched. Patients were included if they were ≥ 18 years old and had a lumbar MRI between January 1, 2006 and January 31, 2008, that showed a Modic 1 signal at a single level...
January 23, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28113074/carrying-asymmetric-loads-during-stair-negotiation
#19
Junsig Wang, Jason Gillette
Individuals often carry items in one hand instead of both hands during activities of daily living. The combined effects of carrying asymmetric loads and stair negotiation may create even higher demands on the low back and lower extremity. The purpose of this study was to investigate the effect of symmetric and asymmetric loading conditions on L5/S1 and lower extremity moments during stair negotiation. Twenty-two college students performed stair ascent and stair descent on a three-step staircase (step height 18...
January 10, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28110917/using-a-marker-less-method-for-estimating-l5-s1-moments-during-symmetrical-lifting
#20
Rahil Mehrizi, Xu Xu, Shaoting Zhang, Vladimir Pavlovic, Dimitris Metaxas, Kang Li
The aim of this study is to analyze the validity of a computer vision-based method to estimate 3D L5/S1 joint moment during symmetrical lifting. An important criterion to identify the non-ergonomic lifting task is the value of net moment at L5/S1 joint. This is usually calculated in a laboratory environment which is not practical for on-site biomechanical analysis. The validity of the proposed method, was assessed externally by comparing the results with a lab-based reference method and internally by comparing the estimated L5/S1 joint moments from top-down model and bottom-up model...
January 19, 2017: Applied Ergonomics
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