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https://www.readbyqxmd.com/read/28087395/lumbar-spinal-muscles-and-spinal-canal-study-by-mri-three-dimensional-reconstruction-in-adult-lumbar-spinal-stenosis
#1
Louis Boissière, Bertrand Moal, Olivier Gille, Elise De-Roquefeuil, Muriel Durieux, Ibrahim Obeid, Vincent Dousset, Jean-Marc Vital, Wafa Skalli
BACKGROUND: Lumbar spinal stenosis is degenerative disc disease most common manifestation. If stenosis degree seems poorly related to symptom severity, lumbar muscles role is recognized. Many studies report imaging methods, to analyze muscle volumes and fat infiltration (FI), but remain limited due to the difficulty to represent entire muscle volume variability. Recently a 3D muscle reconstruction protocol (using the deformation of a parametric specific object method (DPSO) and three point Dixon images) was reported...
January 10, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28078834/magnetic-resonance-imaging-findings-of-patients-with-suspected-tuberculosis-from-a-tertiary-care-centre-in-sri-lanka
#2
A S Pallewatte, N A Wickramasinghe
Introduction: Spinal tuberculosis (TB) is a relatively common cause for spinal pathology in Sri Lanka and a common indication for magnetic resonance imaging (MRI). Objectives: The objective of the study was to describe the MRI imaging pattern of spinal TB in a series of patients. Methods: One hundred and nine patients with clinically confirmed spinal tuberculosis who had undergone MRI scans at the National Hospital of Sri Lanka from 2012-2016 were included in the study...
30, 2016: Ceylon Medical Journal
https://www.readbyqxmd.com/read/28072800/modified-percutaneous-lumbar-foraminoplasty-and-percutaneous-endoscopic-lumbar-discectomy-instrument-design-technique-notes-and-5-years-follow-up
#3
Zhen-Zhou Li, Shu-Xun Hou, Wei-Lin Shang, Ke-Ran Song, Hong-Liang Zhao
BACKGROUND: Conventional percutaneous endoscopic lumbar discectomy (PELD) with an "inside-outside" technique has 4.3% - 10.3% surgical failure rate, especially in central herniated discs (HDs), migrated HDs, and axillary type HDs. PELD with foraminoplasty has been used for complex HDs. Percutaneous lumbar foraminoplasty (PLF), which is performed with a trephine or bone reamer introduced over a guidewire without a protective working cannula in the original Tessys technique, can quickly cut the hypertrophied bony structure under fluoroscopic guidance, and risk injury to the exiting and traversing nerve roots...
January 2017: Pain Physician
https://www.readbyqxmd.com/read/28059685/resolution-of-the-more-anteriorly-positioned-psoas-muscle-following-correction-of-spinal-sagittal-alignment-from-spondylolisthesis-case-report
#4
Hasan R Syed, Kurt Yaeger, Faheem A Sandhu
Several studies have described the radiographic, histological, and morphological changes to the paraspinal muscle in patients with chronic low-back pain due to degenerative diseases of the spine. Gross anatomical illustrations have shown that the psoas muscle lies lateral to the L4-5 vertebrae and subsequently thins and dissociates from the vertebral body at L5-S1 in a ventrolateral course. A "rising psoas" may influence the location of the lumbar plexus and result in transient neurological injury on lateral approach to the spine...
January 6, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28052435/lumbar-spine-postures-in-marines-during-simulated-operational-positions
#5
David B Berry, Ana E Rodríguez-Soto, J Su, Sara P Gombatto, Bahar Shahidi, Laura Palombo, Christine Chung, Andrew Jensen, Karen R Kelly, Samuel R Ward
Low back pain has a 70% higher prevalence in members of the armed forces than in the general population, possibly due to the loads and positions soldiers experience during training and combat. Although the influence of heavy load carriage on standing lumbar spine posture in this population is known, postures in other operationally relevant positions are unknown. Therefore, the purpose of this study was to characterize the effect of simulated military operational positions under relevant loading conditions on global and local lumbar spine postures in active duty male US Marines...
January 4, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28051824/atypical-femoral-fracture-as-first-sign-of-non-hodgkin-lymphoma-case-report-with-a-brief-review-of-the-literature
#6
G Saviola, P Prometti, P R Ferrari, L G Dalle Carbonare
ABSTRACT: Atypical subtrochanteric and diaphyseal femoral fractures (AFF) have been suggested to be associated with the use of bisphosphonates (BPs), but the role of these drugs is still under debate. A 64-year old female, never treated with BPs was admitted to our Rehabilitation Institute because of a recent right AFF. The patient began suffering from low back pain radiating to the groin and to the anterior regions of the right thigh and leg, A nuclear magnetic resonance (NMR) of the lumbar spine showed disc protrusions at the L3-L4 and L5-S1 levels with impingement of the spinal nerve root...
November 2016: La Clinica Terapeutica
https://www.readbyqxmd.com/read/28043852/surgical-techniques-for-lumbo-sacral-fusion
#7
REVIEW
P Tropiano, H Giorgi, A Faure, B Blondel
Lumbo-sacral (L5-S1) fusion is a widely performed procedure that has become the reference standard treatment for refractory low back pain. L5-S1 is a complex transition zone between the mobile lordotic distal lumbar spine and the fixed sacral region. The goal is to immobilise the lumbo-sacral junction in order to relieve pain originating from this site. Apart from achieving inter-vertebral fusion, the main challenge lies in the preoperative determination of the fixed L5-S1 position that will be optimal for the patient...
December 30, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28038691/strain-in-posterior-instrumentation-resulted-by-different-combinations-of-posterior-and-anterior-devices-for-long-spine-fusion-constructs
#8
Christopher J Kleck, Damian Illing, Emily M Lindley, Andriy Noshchenko, Vikas V Patel, Cameron Barton, Todd Baldini, Christopher M J Cain, Evalina L Burger
STUDY DESIGN: Clinically related experimental study. OBJECTIVE: Evaluation of strain in posterior low lumbar and spinopelvic instrumentation for multilevel fusion resulting from the impact of such mechanical factors as physiologic motion, different combinations of posterior and anterior instrumentation, and different techniques of interbody device implantation. SUMMARY OF BACKGROUND DATA: Currently different combinations of posterior and anterior instrumentation as well as surgical techniques are used for multilevel lumbar fusion...
January 2017: Spine Deformity
https://www.readbyqxmd.com/read/28029421/risk-factors-for-intervertebral-instability-assessed-by-temporal-evaluation-of-the-radiographs-and-reconstructed-computed-tomography-images-after-l5-s1-single-level-transforaminal-interbody-fusion-a-retrospective-study
#9
Yoshiomi Kobayashi, Yoshio Shinozaki, Yohei Takahashi, Hironari Takaishi, Jun Ogawa
Intervertebral instability risks following L5-S1 transforaminal lumbar interbody fusion (TLIF) and causes of bony bridge formation on computed tomography (CT) remain largely unknown. We evaluated the temporal changes on plain radiographs and reconstructed CT images from 178 patients who had undergone single-level L5-S1 TLIF between February 2011 and February 2015. We statistically analyzed temporal changes the L5-S1 angle on radiographs and intervertebral stability (IVS) at the last observation. Bony bridge formation between the L5-S1 vertebral bodies and the titanium cage subsidence were analyzed by using reconstructed CT...
October 28, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28028448/a-novel-technique-to-repair-a-transverse-sacral-fracture-in-a-previously-fused-lumbosacral-spondylolisthesis
#10
Thomas Noh, Mokbel K Chedid
BACKGROUND: Transverse fractures of the sacrum are rare, and surgical treatment for these fractures ranges from conservative to challenging. Transverse stress fractures of the sacrum after placement of lumbar-to-sacral instrumentation have been previously described. We report a new technique to repair a transverse Type-2 Roy-Camille fracture with spondylolisthesis of S1 over S2 in a previously fused instrumented high-grade L4-L5, L5-S1 spondylolisthesis. CASE DESCRIPTION: A 64-year-old female who previously had an L4-L5, L5-S1 fusion for spondylolisthesis presented with excruciating lower back pain and radiculopathy for over 6 months...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/28024891/transdural-herniated-lumbar-disc-disease-with-muscle-patch-for-closure-of-durotomy-a-brief-review-of-literature
#11
REVIEW
Harsha A Huliyappa, Rakesh Kumar Singh, Sunil Kumar Singh, Manish Jaiswal, Somil Jaiswal, Chhitij Srivastava, Balkrishna Ojha, Anil Chandra, Satnam Chhabra
PURPOSE: Intradural migration of disc (IDMD) is a rare clinical entity accounting for 0.27-0.33% of all herniated disc diseases. Flimsy or dense adhesion between the ventral dural surface and the opposing posterior longitudinal ligament (PLL) is the principal pathology for intradural migrated disc. The most commonly affected lumbar segments are L4-5 (55%), L3-4 (16%), L5-S1 (10%) and less commonly L2L3 and L1L2. No imaging feature is characteristic and the management protocol of durotomy via an endoscopic method is unclear...
December 15, 2016: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28017752/a-strategy-of-percutaneous-endoscopic-lumbar-discectomy-for-migrated-disc-herniation
#12
Kyung-Chul Choi, Dong Chan Lee, Hyeong-Ki Shim, Seung-Ho Shin, Choon-Keun Park
OBJECTIVE: Percutaneous endoscopic lumbar discectomy (PELD) with remarkable advancements has led to successful results comparable to open discectomy. However, its application in herniated disc (HD) with migration is still challenging and technically demanding. The purpose of this study is to propose various strategies for PELD according to HD with migration. METHODS: A retrospective review was performed on 434 consecutive patients who had undergone PELD. HD with migration was classified into four zones: low-grade up/down and high-grade up/down based on the extent and direction of migration...
December 22, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/28017709/anatomical-analysis-of-the-relation-between-human-ligamentum-flavum-and-posterior-spinal-bony-prominence
#13
Javid Akhgar, Hidetomi Terai, Mohammad Suhrab Rahmani, Koji Tamai, Akinobu Suzuki, Hiromitsu Toyoda, Masatoshi Hoshino, Mitsuhiko Ikebuchi, Sayed Abdullah Ahmadi, Kazunori Hayashi, Hiroaki Nakamura
BACKGROUND: Posterior spinal bony prominences are commonly used as landmarks during posterior spinal surgery; however, the exact relationship of these structures with ligamentum flavum (LF) borders and attachments has not been clarified. MATERIALS AND METHODS: Whole spines were removed en bloc from 20 embalmed human cadavers. Plain radiographs and computed tomography (CT) scans of each whole spine were taken, and then the spine was divided in two parts along the pedicle bases...
December 22, 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28008068/active-cortical-dendrites-modulate-perception
#14
Naoya Takahashi, Thomas G Oertner, Peter Hegemann, Matthew E Larkum
There is as yet no consensus concerning the neural basis of perception and how it operates at a mechanistic level. We found that Ca(2+) activity in the apical dendrites of a subset of layer 5 (L5) pyramidal neurons in primary somatosensory cortex (S1) in mice is correlated with the threshold for perceptual detection of whisker deflections. Manipulating the activity of apical dendrites shifted the perceptual threshold, demonstrating that an active dendritic mechanism is causally linked to perceptual detection...
December 23, 2016: Science
https://www.readbyqxmd.com/read/28002853/comparison-of-lumbar-lordosis-in-lateral-radiographs-in-standing-position-with-supine-mr-imaging-in-consideration-of-the-sacral-slope
#15
Achim Benditz, Daniel Boluki, Markus Weber, Florian Zeman, Joachim Grifka, Florian Völlner
Purpose To investigate the influence of sacral slope on the correlation between measurements of lumbar lordosis obtained by standing radiographs and magnetic resonance images in supine position (MRI). Little information is available on the correlation between measurements of lumbar lordosis obtained by radiographic and MR images. Most relevant studies have shown correlations for the thoracic spine, but detailed analyses on the lumbar spine are lacking. Methods MR images and standing lateral radiographs of 63 patients without actual low back pain or radiographic pathologies of the lumbar spine were analyzed...
December 21, 2016: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/27997507/the-prevalence-and-risk-factors-of-iliac-screw-loosening-after-adult-spinal-deformity-surgery
#16
Tomohiro Banno, Tomohiko Hasegawa, Yu Yamato, Sho Kobayashi, Daisuke Togawa, Shin Oe, Yuki Mihara, Yukihiro Matsuyama
STUDY DESIGN: A retrospective study. OBJECTIVE: We investigated the prevalence of iliac screw loosening and determined risk factors after adult spinal deformity (ASD) surgery. SUMMARY OF BACKGROUND DATA: Lumbosacral fixation is crucial to maintain optimal sagittal alignment. Iliac screws are commonly placed to provide protection for sacral pedicle screws. Radiolucent areas around the screws indicate fixation loss and pseudarthrosis. METHODS: Seventy-two ASD patients (13 men, 59 women; mean age, 69...
December 16, 2016: Spine
https://www.readbyqxmd.com/read/27994777/mini-open-anterior-lumbar-interbody-fusion-combined-with-lateral-lumbar-interbody-fusion-in-corrective-surgery-for-adult-spinal-deformity
#17
Chong-Suh Lee, Se-Jun Park, Sung-Soo Chung, Jun-Young Lee, Tae-Hoon Yum, Seong-Kee Shin
STUDY DESIGN: Prospective observational study. PURPOSE: To introduce the techniques and present the surgical outcomes of mini-open anterior lumbar interbody fusion (ALIF) at the most caudal segments of the spine combined with lateral lumbar interbody fusion (LLIF) for the correction of adult spinal deformity. OVERVIEW OF LITERATURE: Although LLIF is increasingly used to correct adult spinal deformity, the correction of sagittal plane deformity with LLIF alone is reportedly suboptimal...
December 2016: Asian Spine Journal
https://www.readbyqxmd.com/read/27994557/intervertebral-disc-swelling-demonstrated-by-3d-and-water-content-magnetic-resonance-analyses-after-a-3-day-dry-immersion-simulating-microgravity
#18
Loïc Treffel, Karen Mkhitaryan, Stéphane Gellee, Guillemette Gauquelin-Koch, Claude Gharib, Stéphane Blanc, Catherine Millet
Background: Vertebral deconditioning is commonly experienced after space flight and simulation studies. Disc herniation is quadrupled after space flight. Purpose: The main hypothesis formulated by the authors is that microgravity results in intervertebral disc (IVD) swelling. Study Design: The aim of the study was to identify the morphological changes of the spine and their clinical consequences after simulated microgravity by 3-day dry immersion (DI). The experimental protocol was performed on 12 male volunteers using magnetic resonance imaging and spectroscopy before and after DI...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27977444/outcome-of-decompression-alone-for-foraminal-extraforaminal-entrapment-of-l5-nerve-root-through-wiltse-paraspinal-approach
#19
Kyung-Chul Choi, Jin-Sung Kim, Dong Chan Lee, Choon-Keun Park
STUDY DESIGN: Retrospective analysis. OBJECTIVE OF THE STUDY: The objective of the study was to present the surgical outcome and analyze the prognostic factors for postoperative leg pain after posterior decompression alone for foraminal/extraforaminal L5 entrapment at L5-S1 segment (LSS). SUMMARY OF BACKGROUND DATA: Disk extrusion, hypertrophy of facet joint, osteophyte of vertebral body, thickened lumbosacral ligament, and collapsed disk lead to form the lumbosacral tunnel which compresses the L5 exiting nerve root...
December 13, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27965310/rare-cause-of-back-pain-staphylococcus-aureus-vertebral-osteomyelitis-complicated-by-recurrent-epidural-abscess-and-severe-sepsis
#20
Louise Dunphy, Shabnam Iyer, Christopher Brown
An epidural abscess represents a rare acute medical emergency, with a reported incidence of 2.5/10 000 hospital admissions annually. The clinical features include fever, spinal pain, radiating nerve root pain and leg weakness. When sepsis is present, prompt recognition is required to initiate appropriate antimicrobial therapy and surgical decompression. We present the case of a man aged 68 years presenting to the emergency department with a 3-day history of fever, low back, right hip and leg pain. He was hypoxic, tachycardic and hypotensive...
December 13, 2016: BMJ Case Reports
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